undamentalytics Newsletter

Congress: members

Brian J. Mast

Backtest from 16 May 2017 to 2 Nov 2026 · weekly · hypothetical

Watch this strategy
Return a year
−5.3%
S&P 500 +14.7%
Last 12 months
−60.1%
S&P 500 +12.1%
Sharpe ratio
0.11
S&P 500 0.72
Biggest drop
−95.4%
S&P 500 −31.8%
$10.0k$20.0k$40.0k$80.0k 20172019202120232025 $36.5k$6.0k
Brian J. MastS&P 500 $10,000 in Brian J. Mast from 16 May 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. Brian J. Mast (Republican, FL) 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.

Brian J. Mast's trades →

Key statistics

MeasureStrategyS&P 500
Return a year (compound)−5.3%+14.7%
Total return−40%+265%
Last 12 months−60.1%+12.1%
Last 3 months−22.4%—
Last month−17.7%—
This year so far−48.7%—
Volatility a year54.2%17.4%
Sharpe ratio0.110.72
Biggest drop−95.4%−31.8%
Beta to the S&P 5001.381.00
Alpha a year (t-statistic)−11.2% (−0.71)—
Share of weeks up49%—

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. 61 reported trades were copied.

Insights

CompanyWeightHeld sinceReturn since
TLRY31.6%10 Aug 2023−90.3%
SPCE24.1%10 Aug 2023−96.2%
T23.6%27 Mar 2024+40.2%
AMZN20.7%27 Mar 2024+38.4%
PeriodReturn a yearS&P 500SharpeS&P 500Biggest dropBetaAlpha (t)
Whole backtest16 May 2017 to 2 Nov 2026−5.3%+14.7%0.110.72−95.4%1.38−11.2% (−0.71)
2018 onwards5 Jan 2018 to 2 Nov 2026−8.1%+13.9%0.060.66−95.4%1.37−13.2% (−0.80)
Last three years3 Nov 2023 to 2 Nov 2026−45.9%+21.8%−0.901.16−87.8%1.38−72.4% (−2.35)
Last year7 Nov 2025 to 2 Nov 2026−58.0%+14.2%−1.570.84−57.4%1.16−88.9% (−1.85)
DateCompanyAction
27 Mar 2024TBought
27 Mar 2024AMZNBought
10 Aug 2023TLRYBought
10 Aug 2023SPCEBought
24 Aug 2021SPCEBought
20 Apr 2021AMTXBought
2 Feb 2021IPWRBought
2 Dec 2020TLRYBought
16 Oct 2020BEEMBought
10 Sept 2020RXTBought
5 Mar 2020PSNLBought
3 Oct 2019UBERBought
5 Sept 2019KHCBought
5 Sept 2019AMBought
9 May 2019CVSBought
13 Mar 2019SNAPBought
13 Mar 2019NIOBought
6 Feb 2019UBSBought
6 Feb 2019TLRYBought
6 Feb 2019BTIBought
8 Jan 2019YETIBought
21 Sept 2018EXPEBought
21 Sept 2018DISBought
16 May 2017CLFBought

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

DateCompanyAction
12 Jan 2023UBSSold
12 Jan 2023CLFSold
15 Aug 2022IPWRSold
10 May 2022TLRYSold
10 May 2022SPCESold
17 May 2021AMTXSold
2 Dec 2020BEEMSold
16 Oct 2020RXTSold
17 Aug 2020NIOSold
5 May 2020PSNLSold
4 Feb 2020UBERSold
4 Feb 2020AMSold
3 Oct 2019KHCSold
5 Sept 2019CVSSold
16 Apr 2019SNAPSold
16 Apr 2019BTISold
13 Mar 2019TLRYSold
6 Feb 2019YETISold
6 Feb 2019EXPESold
6 Feb 2019DISSold

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