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Congress: members

Susan A. Davis

Backtest from 8 May 2015 to 2 Nov 2026 · weekly · hypothetical

Watch this strategy
Return a year
+12.2%
S&P 500 +13.6%
Last 12 months
+27.2%
S&P 500 +12.1%
Sharpe ratio
0.47
S&P 500 0.71
Biggest drop
−39.6%
S&P 500 −31.8%
$10.0k$20.0k$40.0k 201520172019202120232025 $43.2k$37.6k
Susan A. DavisS&P 500 $10,000 in Susan A. Davis from 8 May 2015 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. Susan A. Davis (Independent, CA) 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.

Susan A. Davis's trades →

Key statistics

MeasureStrategyS&P 500
Return a year (compound)+12.2%+13.6%
Total return+276%+332%
Last 12 months+27.2%+12.1%
Last 3 months−13.6%—
Last month−20.2%—
This year so far+30.2%—
Volatility a year27.4%16.6%
Sharpe ratio0.470.71
Biggest drop−39.6%−31.8%
Beta to the S&P 5001.191.00
Alpha a year (t-statistic)−1.1% (−0.20)—
Share of weeks up54%—

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. 50 reported trades were copied.

Insights

CompanyWeightHeld sinceReturn since
FTNT56.4%1 Aug 2017+1658.0%
META15.3%8 Feb 2019+268.5%
VSAT10.7%16 Mar 2020+97.5%
F6.5%1 Dec 2020+85.6%
EXC3.8%29 Mar 2018+124.4%
BIDU3.7%16 Mar 2020−13.7%
ILMN2.9%8 Feb 2019−17.1%
CSIQ0.8%1 Dec 2020−77.2%
PeriodReturn a yearS&P 500SharpeS&P 500Biggest dropBetaAlpha (t)
Whole backtest8 May 2015 to 2 Nov 2026+12.2%+13.6%0.470.71−39.6%1.19−1.1% (−0.20)
2018 onwards5 Jan 2018 to 2 Nov 2026+12.9%+13.9%0.470.66−39.6%1.21−0.7% (−0.10)
Last three years3 Nov 2023 to 2 Nov 2026+27.2%+21.8%0.821.16−23.8%1.25+3.6% (0.26)
Last year7 Nov 2025 to 2 Nov 2026+31.5%+14.2%0.840.84−23.8%1.50+14.0% (0.47)
DateCompanyAction
1 Dec 2020FBought
1 Dec 2020CSIQBought
17 Apr 2020LEVIBought
16 Mar 2020VSATBought
16 Mar 2020BIDUBought
8 Feb 2019METABought
8 Feb 2019ILMNBought
29 Mar 2018EXCBought
27 Sept 2017KRBought
27 Sept 2017ALKBought
1 Aug 2017FTNTBought
20 May 2016RCLBought
20 May 2016KBHBought
23 Feb 2016QCOMBought
1 Dec 2015AEGBought
19 Aug 2015VLOBought
19 Aug 2015LUVBought
8 May 2015CHKPBought

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

DateCompanyAction
30 Oct 2020LUVSold
30 Oct 2020LEVISold
16 Mar 2020ALKSold
17 Nov 2017KRSold
1 Aug 2017QCOMSold
1 Aug 2017AEGSold
30 Dec 2016KBHSold
28 Sept 2016VLOSold
28 Sept 2016RCLSold
28 Sept 2016CHKPSold

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