undamentalytics Newsletter

Congress: members

David P. Joyce

Backtest from 27 Jul 2017 to 2 Nov 2026 · weekly · hypothetical

Watch this strategy
Return a year
+14.5%
S&P 500 +14.6%
Last 12 months
+13.2%
S&P 500 +12.1%
Sharpe ratio
0.70
S&P 500 0.71
Biggest drop
−32.7%
S&P 500 −31.8%
$10.0k$20.0k 20172019202120232025 $35.3k$35.2k
David P. JoyceS&P 500 $10,000 in David P. Joyce from 27 Jul 2017 against the S&P 500 (total return) over the same dates, marked weekly, log scale. Hypothetical: before taxes and trading costs.

About

Mirrors the disclosed stock holdings of Rep. David P. Joyce (Republican, OH) and family. It buys on the first trading day after each report is filed, sized by the middle of the value band reported, starts from the holdings listed in the member's annual disclosure report once that report is public, and holds each position until a sale is reported. Call options count as the stock until they expire. Members often report weeks or months late, so this is what a follower could actually have done.

David P. Joyce's trades →

Key statistics

MeasureStrategyS&P 500
Return a year (compound)+14.5%+14.6%
Total return+252%+253%
Last 12 months+13.2%+12.1%
Last 3 months+1.1%—
Last month+4.7%—
This year so far+7.4%—
Volatility a year17.7%17.6%
Sharpe ratio0.700.71
Biggest drop−32.7%−31.8%
Beta to the S&P 5000.961.00
Alpha a year (t-statistic)+0.5% (0.28)—
Share of weeks up59%—

Sharpe ratio uses returns above the 3-month Treasury bill rate. Alpha is the yearly return left after allowing for the strategy's exposure to the S&P 500 (CAPM); a t-statistic below about 2 means it cannot be told apart from luck. 29 reported trades were copied.

Insights

CompanyWeightHeld sinceReturn since
JNJ7.3%13 Dec 2017+139.7%
AAPL6.9%13 Dec 2017+737.7%
V6.8%13 Dec 2017+299.6%
COST6.7%13 Dec 2017+520.0%
AME6.6%13 Dec 2017+260.5%
BLK6.2%13 Aug 2024+43.3%
AMT6.1%13 Dec 2017+66.1%
ICE6.0%13 Dec 2017+173.3%
C6.0%13 Aug 2024+123.3%
GBDC5.7%13 Aug 2024+14.4%
GE5.7%18 Oct 2019+628.5%
GOOGL5.0%13 Dec 2017+444.2%
CMCSA5.0%13 Dec 2017−15.2%
BA4.5%13 Aug 2024+3.9%
ADBE4.0%13 Dec 2017+43.6%
KMI1.7%27 Jul 2017+161.6%
UNH1.7%14 Aug 2025+51.2%
TRP1.6%13 Aug 2024+57.9%
PG1.6%13 Dec 2017+129.8%
UPS1.6%27 Jul 2017+46.8%
AMZN1.5%27 Jul 2017+375.7%
CTSH1.1%13 Dec 2017+5.6%
NKE0.9%27 Jul 2017−22.4%
PeriodReturn a yearS&P 500SharpeS&P 500Biggest dropBetaAlpha (t)
Whole backtest27 Jul 2017 to 2 Nov 2026+14.5%+14.6%0.700.71−32.7%0.96+0.5% (0.28)
2018 onwards5 Jan 2018 to 2 Nov 2026+14.3%+13.9%0.670.66−32.7%0.96+0.8% (0.45)
Last three years3 Nov 2023 to 2 Nov 2026+19.7%+21.8%1.121.16−14.7%0.80+1.4% (0.37)
Last year7 Nov 2025 to 2 Nov 2026+14.4%+14.2%0.930.84−9.2%0.65+3.6% (0.47)
DateCompanyAction
14 Aug 2025UNHBought
13 Aug 2024TRPBought
13 Aug 2024GBDCBought
13 Aug 2024CBought
13 Aug 2024BLKBought
13 Aug 2024BABought
18 Oct 2019GEBought
9 May 2019GBDCBought
9 May 2019BLKBought
10 Oct 2018GEBought
13 Dec 2017VBought
13 Dec 2017UNHBought
13 Dec 2017TRPBought
13 Dec 2017PGBought
13 Dec 2017MRKBought
13 Dec 2017JPMBought
13 Dec 2017JNJBought
13 Dec 2017ICEBought
13 Dec 2017GOOGLBought
13 Dec 2017CTSHBought
13 Dec 2017COSTBought
13 Dec 2017CMCSABought
13 Dec 2017CBought
13 Dec 2017BABought
13 Dec 2017AMTBought

Dated on the first trading day after the report was filed, when a follower could have acted.

DateCompanyAction
7 Aug 2024TRPSold
7 Aug 2024GBDCSold
7 Aug 2024CSold
7 Aug 2024BLKSold
7 Aug 2024BASold
14 Aug 2023UNHSold
15 Aug 2022JPMSold
9 May 2019MRKSold
9 May 2019GESold

Dated on the first trading day after the report was filed, when a follower could have acted.

Backtests are hypothetical and use today's listed companies only, which flatters results. Past performance does not predict future returns. This is research, not investment advice. How we backtest