def simple(vault: VaultV1, samples: ApySamples) -> Apy:
inception_block = contract_creation_block(vault.vault.address)
if not inception_block:
raise ApyError("v1:blocks", "inception_block not found")
contract = vault.vault
price_per_share = contract.getPricePerFullShare
inception_price = 1e18
try:
now_price = price_per_share(block_identifier=samples.now)
except ValueError:
now_price = inception_price
if samples.week_ago > inception_block:
try:
week_ago_price = price_per_share(block_identifier=samples.week_ago)
except ValueError:
week_ago_price = now_price
else:
week_ago_price = now_price
if samples.month_ago > inception_block:
try:
month_ago_price = price_per_share(block_identifier=samples.month_ago)
except ValueError:
month_ago_price = week_ago_price
else:
month_ago_price = week_ago_price
now_point = SharePricePoint(samples.now, now_price)
week_ago_point = SharePricePoint(samples.week_ago, week_ago_price)
month_ago_point = SharePricePoint(samples.month_ago, month_ago_price)
inception_point = SharePricePoint(inception_block, inception_price)
week_ago_apy = calculate_roi(now_point, week_ago_point)
month_ago_apy = calculate_roi(now_point, month_ago_point)
inception_apy = calculate_roi(now_point, inception_point)
net_apy = month_ago_apy
strategy = vault.strategy
withdrawal = strategy.withdrawalFee() if hasattr(strategy, "withdrawalFee") else 0
strategist_performance = strategy.performanceFee() if hasattr(strategy, "performanceFee") else 0
strategist_reward = strategy.strategistReward() if hasattr(strategy, "strategistReward") else 0
treasury = strategy.treasuryFee() if hasattr(strategy, "treasuryFee") else 0
performance = strategist_reward + strategist_performance + treasury
apy = net_apy / (1 - performance / 1e4)
points = ApyPoints(week_ago_apy, month_ago_apy, inception_apy)
fees = ApyFees(performance=performance, withdrawal=withdrawal)
return Apy("v1:simple", apy, net_apy, fees, points=points)
def simple(vault: Vault, samples: ApySamples) -> Apy:
harvests = sorted([
harvest for strategy in vault.strategies
for harvest in strategy.harvests
])
if len(harvests) < 10:
raise ApyError("v2:harvests", "harvests are < 10")
now = harvests[-1]
week_ago = closest(harvests, samples.week_ago)
month_ago = closest(harvests, samples.month_ago)
inception_block = harvests[2]
contract = vault.vault
price_per_share = contract.pricePerShare
now_price = price_per_share(block_identifier=now)
inception_price = 10**contract.decimals()
if samples.week_ago > inception_block:
week_ago_price = price_per_share(block_identifier=week_ago)
else:
week_ago_price = now_price
if samples.month_ago > inception_block:
month_ago_price = price_per_share(block_identifier=month_ago)
else:
month_ago_price = week_ago_price
now_point = SharePricePoint(samples.now, now_price)
week_ago_point = SharePricePoint(samples.week_ago, week_ago_price)
month_ago_point = SharePricePoint(samples.month_ago, month_ago_price)
inception_point = SharePricePoint(inception_block, inception_price)
week_ago_apy = calculate_roi(now_point, week_ago_point)
month_ago_apy = calculate_roi(now_point, month_ago_point)
inception_apy = calculate_roi(now_point, inception_point)
net_apy = month_ago_apy
# performance fee is doubled since 1x strategists + 1x treasury
performance = (contract.performanceFee() *
2) if hasattr(contract, "performanceFee") else 0
management = contract.managementFee() if hasattr(contract,
"managementFee") else 0
apy = net_apy / (1 - performance / 1e4) + (management / 1e4)
points = ApyPoints(week_ago_apy, month_ago_apy, inception_apy)
fees = ApyFees(performance=performance, management=management)
return Apy("v2:simple", apy, net_apy, fees, points=points)
def simple(vault: Union[VaultV1, VaultV2], samples: ApySamples) -> Apy:
lp_token = vault.token.address
pool_address = get_pool(lp_token)
gauge_addresses = curve_registry.get_gauges(pool_address)
gauge_address = gauge_addresses[0][0]
# FIXME: crvUSDP doesn't have a gauge connected in the registry
if vault.vault.address == "0x1B5eb1173D2Bf770e50F10410C9a96F7a8eB6e75":
gauge = "0x055be5DDB7A925BfEF3417FC157f53CA77cA7222"
gauge = interface.CurveGauge(gauge_address)
controller = gauge.controller()
controller = interface.CurveGaugeController(controller)
gauge_working_supply = gauge.working_supply()
gauge_weight = controller.gauge_relative_weight(gauge_address)
gauge_inflation_rate = gauge.inflation_rate()
pool_price = curve_registry.get_virtual_price_from_lp_token(lp_token)
underlying_coins = get_underlying_coins(lp_token)
btc_like = any([coin in BTC_LIKE for coin in underlying_coins])
eth_like = any([coin in ETH_LIKE for coin in underlying_coins])
base_asset = WBTC if btc_like else WETH if eth_like else underlying_coins[0]
base_asset_price = get_price(base_asset) or 1
crv_price = get_price(CRV)
y_working_balance = gauge.working_balances(YVECRV_VOTER)
y_gauge_balance = gauge.balanceOf(YVECRV_VOTER)
base_apr = (
gauge_inflation_rate
* gauge_weight
* (SECONDS_PER_YEAR / gauge_working_supply)
* (PER_MAX_BOOST / pool_price)
* crv_price
) / base_asset_price
if y_gauge_balance > 0:
boost = y_working_balance / (PER_MAX_BOOST * y_gauge_balance) or 1
else:
boost = MAX_BOOST
# FIXME: The HBTC v1 vault is currently still earning yield, but it is no longer boosted.
if vault.vault.address == "0x46AFc2dfBd1ea0c0760CAD8262A5838e803A37e5":
boost = 1
boosted_apr = base_apr * boost
if hasattr(gauge, "reward_contract"):
try:
reward_address = gauge.reward_contract()
assert reward_address != ZERO_ADDRESS
reward_apr = rewards(reward_address, pool_price, base_asset_price)
except ValueError:
reward_apr = 0
else:
reward_apr = 0
price_per_share = curve_registry.get_virtual_price_from_lp_token
now_price = price_per_share(lp_token, block_identifier=samples.now)
try:
week_ago_price = price_per_share(lp_token, block_identifier=samples.week_ago)
except ValueError:
raise ApyError("crv", "insufficient data")
now_point = SharePricePoint(samples.now, now_price)
week_ago_point = SharePricePoint(samples.week_ago, week_ago_price)
pool_apr = calculate_roi(now_point, week_ago_point)
pool_apy = (((pool_apr / 365) + 1) ** 365) - 1
# FIXME: crvANKR's pool apy going crazy
if vault.vault.address == "0xE625F5923303f1CE7A43ACFEFd11fd12f30DbcA4":
pool_apy = 0
if type(vault) is VaultV2:
contract = vault.vault
keep_crv = sum([strategy.keepCRV() for strategy in vault.strategies if hasattr(strategy, "keepCRV")])
performance = (contract.performanceFee() * 2) if hasattr(contract, "performanceFee") else 0
management = contract.managementFee() if hasattr(contract, "managementFee") else 0
else:
strategy = vault.strategy
strategist_performance = strategy.performanceFee() if hasattr(strategy, "performanceFee") else 0
strategist_reward = strategy.strategistReward() if hasattr(strategy, "strategistReward") else 0
treasury = strategy.treasuryFee() if hasattr(strategy, "treasuryFee") else 0
keep_crv = strategy.keepCRV() if hasattr(strategy, "keepCRV") else 0
performance = strategist_reward + strategist_performance + treasury
management = 0
keep_crv /= 1e4
performance /= 1e4
management /= 1e4
lose_crv = 1 - keep_crv
gross_farmed_apy = (
(boosted_apr * keep_crv) + (((boosted_apr * lose_crv + reward_apr) / COMPOUNDING) + 1) ** COMPOUNDING
) - 1
apy = (gross_farmed_apy + 1) * (pool_apy + 1) - 1
net_curve_apr = (boosted_apr * lose_crv + reward_apr) * (1 - performance) - management
net_farmed_apy = ((net_curve_apr / COMPOUNDING) + 1) ** COMPOUNDING - 1
net_apy = (net_farmed_apy + 1) * (pool_apy + 1) - 1
fees = ApyFees(performance=performance, management=management, keep_crv=keep_crv)
composite = {
"boost": boost,
"pool_apy": pool_apy,
"boosted_apr": boosted_apr,
"base_apr": base_apr,
"rewards_apr": reward_apr,
}
return Apy("crv", apy, net_apy, fees, composite=composite)
def simple(vault, samples: ApySamples) -> Apy:
lp_token = vault.token.address
pool_address = curve.get_pool(lp_token)
gauge_address = curve.get_gauge(pool_address)
if gauge_address is None:
raise ApyError("crv", "no gauge")
gauge = contract(gauge_address)
try:
controller = gauge.controller()
controller = contract(controller)
except:
# newer gauges do not have a 'controller' method
controller = curve.gauge_controller
block = samples.now
gauge_weight = controller.gauge_relative_weight.call(
gauge_address, block_identifier=block)
gauge_working_supply = gauge.working_supply(block_identifier=block)
if gauge_working_supply == 0:
raise ApyError("crv", "gauge working supply is zero")
gauge_inflation_rate = gauge.inflation_rate(block_identifier=block)
pool = contract(pool_address)
pool_price = pool.get_virtual_price(block_identifier=block)
base_asset_price = get_price(lp_token, block=block) or 1
crv_price = get_price(curve.crv, block=block)
yearn_voter = addresses[chain.id]['yearn_voter_proxy']
y_working_balance = gauge.working_balances(yearn_voter,
block_identifier=block)
y_gauge_balance = gauge.balanceOf(yearn_voter, block_identifier=block)
base_apr = (gauge_inflation_rate * gauge_weight *
(SECONDS_PER_YEAR / gauge_working_supply) *
(PER_MAX_BOOST / pool_price) * crv_price) / base_asset_price
if y_gauge_balance > 0:
boost = y_working_balance / (PER_MAX_BOOST * y_gauge_balance) or 1
else:
boost = MAX_BOOST
# FIXME: The HBTC v1 vault is currently still earning yield, but it is no longer boosted.
if vault.vault.address == "0x46AFc2dfBd1ea0c0760CAD8262A5838e803A37e5":
boost = 1
# TODO: come up with cleaner way to deal with these new gauge rewards
reward_apr = 0
if hasattr(gauge, "reward_contract"):
reward_address = gauge.reward_contract()
if reward_address != ZERO_ADDRESS:
reward_apr = rewards(reward_address,
pool_price,
base_asset_price,
block=block)
elif hasattr(gauge, "reward_data"
): # this is how new gauges, starting with MIM, show rewards
# get our token
# TODO: consider adding for loop with [gauge.reward_tokens(i) for i in range(gauge.reward_count())] for multiple rewards tokens
gauge_reward_token = gauge.reward_tokens(0)
if gauge_reward_token in [ZERO_ADDRESS]:
print("no reward token")
else:
reward_data = gauge.reward_data(gauge_reward_token)
rate = reward_data['rate']
period_finish = reward_data['period_finish']
total_supply = gauge.totalSupply()
token_price = 0
if gauge_reward_token == addresses[chain.id]['rkp3r_rewards']:
rKP3R_contract = interface.rKP3R(gauge_reward_token)
discount = rKP3R_contract.discount(block_identifier=block)
token_price = get_price(addresses[chain.id]['kp3r'],
block=block) * (100 - discount) / 100
else:
token_price = get_price(gauge_reward_token, block=block)
current_time = time() if block is None else get_block_timestamp(
block)
if period_finish < current_time:
reward_apr = 0
else:
reward_apr = (SECONDS_PER_YEAR *
(rate / 1e18) * token_price) / (
(pool_price / 1e18) *
(total_supply / 1e18) * base_asset_price)
else:
reward_apr = 0
price_per_share = pool.get_virtual_price
now_price = price_per_share(block_identifier=samples.now)
try:
week_ago_price = price_per_share(block_identifier=samples.week_ago)
except ValueError:
raise ApyError("crv", "insufficient data")
now_point = SharePricePoint(samples.now, now_price)
week_ago_point = SharePricePoint(samples.week_ago, week_ago_price)
pool_apr = calculate_roi(now_point, week_ago_point)
pool_apy = (((pool_apr / 365) + 1)**365) - 1
# FIXME: crvANKR's pool apy going crazy
if vault.vault.address == "0xE625F5923303f1CE7A43ACFEFd11fd12f30DbcA4":
pool_apy = 0
# prevent circular import for partners calculations
from yearn.v2.vaults import Vault as VaultV2
if isinstance(vault, VaultV2):
vault_contract = vault.vault
if len(vault.strategies) > 0 and hasattr(vault.strategies[0].strategy,
"keepCRV"):
crv_keep_crv = vault.strategies[0].strategy.keepCRV(
block_identifier=block) / 1e4
elif len(vault.strategies) > 0 and hasattr(
vault.strategies[0].strategy, "keepCrvPercent"):
crv_keep_crv = vault.strategies[0].strategy.keepCrvPercent(
block_identifier=block) / 1e4
else:
crv_keep_crv = 0
performance = (vault_contract.performanceFee(block_identifier=block) *
2) / 1e4 if hasattr(vault_contract,
"performanceFee") else 0
management = vault_contract.managementFee(
block_identifier=block) / 1e4 if hasattr(vault_contract,
"managementFee") else 0
else:
strategy = vault.strategy
strategist_performance = strategy.performanceFee(
block_identifier=block) if hasattr(strategy,
"performanceFee") else 0
strategist_reward = strategy.strategistReward(
block_identifier=block) if hasattr(strategy,
"strategistReward") else 0
treasury = strategy.treasuryFee(
block_identifier=block) if hasattr(strategy, "treasuryFee") else 0
crv_keep_crv = strategy.keepCRV(
block_identifier=block) / 1e4 if hasattr(strategy,
"keepCRV") else 0
performance = (strategist_reward + strategist_performance +
treasury) / 1e4
management = 0
if isinstance(vault, VaultV2) and len(vault.strategies) == 2:
crv_strategy = vault.strategies[0].strategy
cvx_strategy = vault.strategies[1].strategy
convex_voter = addresses[chain.id]['convex_voter_proxy']
cvx_working_balance = gauge.working_balances(convex_voter,
block_identifier=block)
cvx_gauge_balance = gauge.balanceOf(convex_voter,
block_identifier=block)
if cvx_gauge_balance > 0:
cvx_boost = cvx_working_balance / (PER_MAX_BOOST *
cvx_gauge_balance) or 1
else:
cvx_boost = MAX_BOOST
cvx_booster = contract(addresses[chain.id]['convex_booster'])
cvx_lock_incentive = cvx_booster.lockIncentive(block_identifier=block)
cvx_staker_incentive = cvx_booster.stakerIncentive(
block_identifier=block)
cvx_earmark_incentive = cvx_booster.earmarkIncentive(
block_identifier=block)
cvx_fee = (cvx_lock_incentive + cvx_staker_incentive +
cvx_earmark_incentive) / 1e4
cvx_keep_crv = cvx_strategy.keepCRV(block_identifier=block) / 1e4
total_cliff = 1e3
max_supply = 1e2 * 1e6 * 1e18 # ?
reduction_per_cliff = 1e23
cvx = contract(addresses[chain.id]['cvx'])
supply = cvx.totalSupply(block_identifier=block)
cliff = supply / reduction_per_cliff
if supply <= max_supply:
reduction = total_cliff - cliff
cvx_minted_as_crv = reduction / total_cliff
cvx_price = get_price(cvx, block=block)
converted_cvx = cvx_price / crv_price
cvx_printed_as_crv = cvx_minted_as_crv * converted_cvx
else:
cvx_printed_as_crv = 0
cvx_apr = ((1 - cvx_fee) * cvx_boost *
base_apr) * (1 + cvx_printed_as_crv) + reward_apr
cvx_apr_minus_keep_crv = ((1 - cvx_fee) * cvx_boost * base_apr) * (
(1 - cvx_keep_crv) + cvx_printed_as_crv)
crv_debt_ratio = vault.vault.strategies(crv_strategy)[2] / 1e4
cvx_debt_ratio = vault.vault.strategies(cvx_strategy)[2] / 1e4
else:
cvx_apr = 0
cvx_apr_minus_keep_crv = 0
cvx_keep_crv = 0
crv_debt_ratio = 1
cvx_debt_ratio = 0
crv_apr = base_apr * boost + reward_apr
crv_apr_minus_keep_crv = base_apr * boost * (1 - crv_keep_crv)
gross_apr = (1 + (crv_apr * crv_debt_ratio + cvx_apr * cvx_debt_ratio)) * (
1 + pool_apy) - 1
cvx_net_apr = (cvx_apr_minus_keep_crv +
reward_apr) * (1 - performance) - management
cvx_net_farmed_apy = (1 + (cvx_net_apr / COMPOUNDING))**COMPOUNDING - 1
cvx_net_apy = ((1 + cvx_net_farmed_apy) * (1 + pool_apy)) - 1
crv_net_apr = (crv_apr_minus_keep_crv +
reward_apr) * (1 - performance) - management
crv_net_farmed_apy = (1 + (crv_net_apr / COMPOUNDING))**COMPOUNDING - 1
crv_net_apy = ((1 + crv_net_farmed_apy) * (1 + pool_apy)) - 1
net_apy = crv_net_apy * crv_debt_ratio + cvx_net_apy * cvx_debt_ratio
# 0.3.5+ should never be < 0% because of management
if isinstance(vault, VaultV2) and net_apy < 0 and Version(
vault.api_version) >= Version("0.3.5"):
net_apy = 0
fees = ApyFees(performance=performance,
management=management,
keep_crv=crv_keep_crv,
cvx_keep_crv=cvx_keep_crv)
composite = {
"boost": boost,
"pool_apy": pool_apy,
"boosted_apr": crv_apr,
"base_apr": base_apr,
"cvx_apr": cvx_apr,
"rewards_apr": reward_apr,
}
return Apy("crv", gross_apr, net_apy, fees, composite=composite)
def simple(vault, samples: ApySamples) -> Apy:
harvests = sorted([harvest for strategy in vault.strategies for harvest in strategy.harvests])
# we don't want to display APYs when vaults are ramping up
if len(harvests) < 2:
raise ApyError("v2:harvests", "harvests are < 2")
# set our time values for simple calcs, closest to a harvest around that time period
now = closest(harvests, samples.now)
week_ago = closest(harvests, samples.week_ago)
month_ago = closest(harvests, samples.month_ago)
# set our parameters
contract = vault.vault
price_per_share = contract.pricePerShare
# calculate our current price
now_price = price_per_share(block_identifier=now)
# get our inception data
inception_price = 10 ** contract.decimals()
inception_block = harvests[:2][-1]
if now_price == inception_price:
raise ApyError("v2:inception", "no change from inception price")
# check our historical data
if samples.week_ago > inception_block:
week_ago_price = price_per_share(block_identifier=week_ago)
else:
week_ago_price = inception_price
if samples.month_ago > inception_block:
month_ago_price = price_per_share(block_identifier=month_ago)
else:
month_ago_price = inception_price
now_point = SharePricePoint(samples.now, now_price)
week_ago_point = SharePricePoint(samples.week_ago, week_ago_price)
month_ago_point = SharePricePoint(samples.month_ago, month_ago_price)
inception_point = SharePricePoint(inception_block, inception_price)
week_ago_apy = calculate_roi(now_point, week_ago_point)
month_ago_apy = calculate_roi(now_point, month_ago_point)
inception_apy = calculate_roi(now_point, inception_point)
# use the first non-zero apy, ordered by precedence
apys = [month_ago_apy, week_ago_apy, inception_apy]
net_apy = next((value for value in apys if value != 0), 0)
# for performance fee, half comes from strategy (strategist share) and half from the vault (treasury share)
strategy_fees = []
for strategy in vault.strategies: # look at all of our strategies
debt_ratio = contract.strategies(strategy.strategy)['debtRatio'] / 10000
performance_fee = contract.strategies(strategy.strategy)['performanceFee']
proportional_fee = debt_ratio * performance_fee
strategy_fees.append(proportional_fee)
strategy_performance = sum(strategy_fees)
vault_performance = contract.performanceFee() if hasattr(contract, "performanceFee") else 0
management = contract.managementFee() if hasattr(contract, "managementFee") else 0
performance = vault_performance + strategy_performance
performance /= 1e4
management /= 1e4
# assume we are compounding every week
compounding = 52
# calculate our APR after fees
apr_after_fees = compounding * ((net_apy + 1) ** (1 / compounding)) - compounding
# calculate our pre-fee APR
gross_apr = apr_after_fees / (1 - performance) + management
# 0.3.5+ should never be < 0% because of management
if net_apy < 0 and Version(vault.api_version) >= Version("0.3.5"):
net_apy = 0
points = ApyPoints(week_ago_apy, month_ago_apy, inception_apy)
fees = ApyFees(performance=performance, management=management)
return Apy("v2:simple", gross_apr, net_apy, fees, points=points)
def average(vault, samples: ApySamples) -> Apy:
harvests = sorted([harvest for strategy in vault.strategies for harvest in strategy.harvests])
# we don't want to display APYs when vaults are ramping up
if len(harvests) < 2:
raise ApyError("v2:harvests", "harvests are < 2")
# set our parameters
contract = vault.vault
price_per_share = contract.pricePerShare
# calculate our current price
now_price = price_per_share(block_identifier=samples.now)
# get our inception data
inception_price = 10 ** contract.decimals()
inception_block = harvests[:2][-1]
if now_price == inception_price:
raise ApyError("v2:inception", "no change from inception price")
# check our historical data
if samples.week_ago > inception_block:
week_ago_price = price_per_share(block_identifier=samples.week_ago)
else:
week_ago_price = inception_price
if samples.month_ago > inception_block:
month_ago_price = price_per_share(block_identifier=samples.month_ago)
else:
month_ago_price = inception_price
now_point = SharePricePoint(samples.now, now_price)
week_ago_point = SharePricePoint(samples.week_ago, week_ago_price)
month_ago_point = SharePricePoint(samples.month_ago, month_ago_price)
inception_point = SharePricePoint(inception_block, inception_price)
week_ago_apy = calculate_roi(now_point, week_ago_point)
month_ago_apy = calculate_roi(now_point, month_ago_point)
inception_apy = calculate_roi(now_point, inception_point)
# we should look at a vault's harvests, age, etc to determine whether to show new APY or not
# use the first non-zero apy, ordered by precedence
apys = [month_ago_apy, week_ago_apy]
two_months_ago = datetime.now() - timedelta(days=60)
if contract.activation() > two_months_ago.timestamp():
# if the vault was activated less than two months ago then it's ok to use
# the inception apy, otherwise using it isn't representative of the current apy
apys.append(inception_apy)
net_apy = next((value for value in apys if value != 0), 0)
# for performance fee, half comes from strategy (strategist share) and half from the vault (treasury share)
strategy_fees = []
for strategy in vault.strategies: # look at all of our strategies
debt_ratio = contract.strategies(strategy.strategy)['debtRatio'] / 10000
performance_fee = contract.strategies(strategy.strategy)['performanceFee']
proportional_fee = debt_ratio * performance_fee
strategy_fees.append(proportional_fee)
strategy_performance = sum(strategy_fees)
vault_performance = contract.performanceFee() if hasattr(contract, "performanceFee") else 0
management = contract.managementFee() if hasattr(contract, "managementFee") else 0
performance = vault_performance + strategy_performance
performance /= 1e4
management /= 1e4
# assume we are compounding every week
compounding = 52
# calculate our APR after fees
# if net_apy is negative no fees are charged
apr_after_fees = compounding * ((net_apy + 1) ** (1 / compounding)) - compounding if net_apy > 0 else net_apy
# calculate our pre-fee APR
gross_apr = apr_after_fees / (1 - performance) + management
# 0.3.5+ should never be < 0% because of management
if net_apy < 0 and Version(vault.api_version) >= Version("0.3.5"):
net_apy = 0
points = ApyPoints(week_ago_apy, month_ago_apy, inception_apy)
fees = ApyFees(performance=performance, management=management)
return Apy("v2:averaged", gross_apr, net_apy, fees, points=points)
def simple(vault, samples: ApySamples) -> Apy:
inception_block = contract_creation_block(vault.vault.address)
if not inception_block:
raise ApyError("v1:blocks", "inception_block not found")
contract = vault.vault
price_per_share = contract.getPricePerFullShare
inception_price = 1e18
try:
now_price = price_per_share(block_identifier=samples.now)
except ValueError:
now_price = inception_price
if samples.week_ago > inception_block:
try:
week_ago_price = price_per_share(block_identifier=samples.week_ago)
except ValueError:
week_ago_price = now_price
else:
week_ago_price = now_price
if samples.month_ago > inception_block:
try:
month_ago_price = price_per_share(
block_identifier=samples.month_ago)
except ValueError:
month_ago_price = week_ago_price
else:
month_ago_price = week_ago_price
now_point = SharePricePoint(samples.now, now_price)
week_ago_point = SharePricePoint(samples.week_ago, week_ago_price)
month_ago_point = SharePricePoint(samples.month_ago, month_ago_price)
inception_point = SharePricePoint(inception_block, inception_price)
week_ago_apy = calculate_roi(now_point, week_ago_point)
month_ago_apy = calculate_roi(now_point, month_ago_point)
inception_apy = calculate_roi(now_point, inception_point)
# use the first non-zero apy, ordered by precedence
apys = [week_ago_apy, month_ago_apy, inception_apy]
net_apy = next((value for value in apys if value != 0), 0)
strategy = vault.strategy
withdrawal = strategy.withdrawalFee() if hasattr(strategy,
"withdrawalFee") else 0
strategist_performance = strategy.performanceFee() if hasattr(
strategy, "performanceFee") else 0
strategist_reward = strategy.strategistReward() if hasattr(
strategy, "strategistReward") else 0
treasury = strategy.treasuryFee() if hasattr(strategy,
"treasuryFee") else 0
performance = (strategist_reward + strategist_performance + treasury) / 1e4
# assume we are compounding every week
compounding = 52
# calculate our APR after fees
# if net_apy is negative no fees are charged
apr_after_fees = compounding * (
(net_apy + 1)**
(1 / compounding)) - compounding if net_apy > 0 else net_apy
# calculate our pre-fee APR
gross_apr = apr_after_fees / (1 - performance)
points = ApyPoints(week_ago_apy, month_ago_apy, inception_apy)
fees = ApyFees(performance=performance, withdrawal=withdrawal)
return Apy("v1:simple", gross_apr, net_apy, fees, points=points)