July 2nd, 2020 Options Expiration -- SPDR S&P 500 ETF Covered Calls Position Assigned

The July 2nd, 2020 $290.00 Covered Calls position in the SPDR S&P 500 ETF (ticker SPY) expired in-the-money, so the 200 shares of SPY were assigned (i.e. sold) at the $290.00 strike price.  As detailed below, the return-on-investment (ROI) result was  +0.8% absolute return (equivalent to +31.6% annualized return-on-investment for the 9 days holding period).

SPDR S&P 500 ETF (SPY) -- Covered Calls Position Closed

The buy/write transaction was as follows:
06/24/2020 Bought 200 shares of SPDR S&P 500 ETF @ $303.37 per share 
06/24/2020 Sold 2 SPY July 2nd, 2020 $290.00 Call options @ $15.61 per share
Note: the Implied Volatility of the Call options was 37.8 and its Open Interest was 235 contracts
07/02/2020 Two SPDR S&P 500 ETF Call options expired in-the-money so 200 SPY shares sold at $290.00 strike price.
Note: the SPY share price closed in-the-money at $312.19.

The overall performance result (including commissions) was as follows:
Covered Calls Cost Basis: $57,553.34
= ($303.37 - $15.61) * 200 shares + $1.34 commission

Net Profit Components:
(a) Options Income: +$3,122.00
= ($15.61 * 200 shares)
(b) Dividend Income: +$0.00
(c) Capital Appreciation (SPY was above $290.00 strike price at the July 2nd, 2020 expiration): -$2,674.00
= ($290.00 - $303.37) * 200 shares

Total Net Profit: +$448.00
= (+$3,122.00 options income +$0.00 dividend income -$2,674.00 capital appreciation)

Absolute Return: +0.8%
= +$448.00/$57,553.34
Equivalent Annualized Return: +31.6%
= (+$448.00/$57,553.34)*(365/9 days)