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Data as of 2026-09-29
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Katherine Clark: stock trades filed in Congress

Every stock trade Katherine Clark has filed, when each one became public, how long the filing took, and how the buys did against the S&P 500 once anyone could have acted on them.

Key Facts

  • Katherine Clark is a Democrat member of the US House of Representatives for MA.
  • Katherine Clark filed 143 stock trades between 2020-12-04 (4 December 2020) and 2026-07-15 (15 July 2026): 52 buys and 62 sells.
  • The disclosed dollar ranges add up to roughly $2.7M, counting each range at its midpoint.
  • The median trade was filed 42 days after it happened, and 40% of trades were filed after the 45 day deadline.
  • Across 13 scored buys, Katherine Clark averaged +1.2% against the S&P 500 (SPY) over the 90 days after disclosure, with 69% of them ahead of the index. That result is based on too few months of entries (3) to judge.
  • Data as of 2026-09-23 (23 September 2026).
Trades filed 143 52 buys, 62 sells
Est. volume $2.7M range midpoints
Median days to file 42
Filed late 40% after 45 days
Avg vs S&P, 90d +1.2% 13 scored buys
Beat the S&P 69% 90 days after entry

Would copying Katherine Clark have paid?

prices as of 2026-09-28

The result. Across 13 scored buys, Katherine Clark averaged +1.2% against the S&P 500 (SPY) over the 90 days after disclosure, with 69% of them ahead of the index. That result is based on too few months of entries (3) to judge.

Average return of Katherine Clark's disclosed buys against the S&P 500 at 30, 90 and 180 days.
Days after entryScored buysAvg vs S&PBeat S&PEntry monthst statisticReading
30 days 13 +1.9% 54% 3 n/a based on too few months of entries (3) to judge
90 days 13 +1.2% 69% 3 n/a based on too few months of entries (3) to judge
180 days 13 -4.1% 46% 3 n/a based on too few months of entries (3) to judge

Each buy is entered on the first trading day after it was filed. One observation counts per stock and entry day. A t statistic near 0 means the average is indistinguishable from luck; above about 2 or below about -2 it is unlikely to be chance.

Katherine Clark: average excess return after disclosure Katherine Clark's scored buys averaged -4.13% against the S&P 500 by day 180 after entry, across 13 buys. The grey line is the average for all of Congress. -5.3% -3.3% -1.4% +0.6% +2.5% 0d28d56d84d112d140d168d
Katherine Clark's scored buys averaged -4.13% against the S&P 500 by day 180 after entry, across 13 buys. The grey line is the average for all of Congress.
Katherine Clark: average excess return after disclosure
Days after entryKatherine ClarkAll of Congress
0d0.00%0.00%
7d+2.40%+0.19%
14d+1.21%+0.02%
21d+0.41%+0.14%
28d+2.28%+0.08%
35d+0.41%+0.17%
42d-0.50%-0.01%
49d-0.84%-0.02%
56d+1.56%+0.03%
63d+0.59%-0.35%
70d+0.12%-0.42%
77d+1.46%-0.52%
84d+1.08%-0.63%
91d+1.90%-0.69%
98d+0.94%-0.79%
105d-0.55%-0.81%
112d-1.23%-0.83%
119d-2.28%-1.08%
126d-4.27%-1.17%
133d-5.30%-1.27%
140d-4.90%-1.45%
147d-3.99%-1.51%
154d-3.99%-1.81%
161d-2.76%-1.86%
168d-4.02%-1.91%
175d-4.95%-1.90%
180d-4.13%-1.91%

Most traded stocks

  1. GOOGL5 trades, $40.0K
  2. CCEP4 trades, $32.0K
  3. HD4 trades, $32.0K
  4. SONY4 trades, $32.0K
  5. TSM4 trades, $32.0K
  6. UBS4 trades, $32.0K
  7. FSLR3 trades, $48.5K
  8. AAPL3 trades, $24.0K
  9. ABB3 trades, $24.0K
  10. ABT3 trades, $24.0K

Every filed trade

as of 2026-09-23
Showing the latest 100 of 143 trades. Sorting applies to the rows shown.
Stock trades filed by Katherine Clark, newest first. Click a heading to sort.
FiledStockTypeSizeDays to file90 day vs S&P
15 Jul 2026 US TREASURY NOTE buy 15K–50K 28 n/a
15 Jul 2026 US TREASURY NOTE buy 50K–100K 28 n/a
6 Nov 2023 KO sell 15K–50K 28 n/a
6 Nov 2023 US TREASURY NOTE buy 250K–500K 13 n/a
9 Jun 2023 WBD receive 1K–15K 426 n/a
9 Jun 2023 T exchange 1K–15K 426 n/a
7 Mar 2023 FEDERAL FARM CREDIT BANK buy 100K–250K 11 n/a
6 Oct 2022 NTAP sell 1K–15K 20 n/a
17 Aug 2022 KBH sell 1K–15K 40 n/a
3 May 2022 US TREASURY NOTE buy 100K–250K 27 n/a
13 Apr 2022 US TREASURY NOTE buy 250K–500K 20 n/a
13 Apr 2022 US TREASURY NOTE buy 100K–250K 12 n/a
15 Oct 2021 FSLR exchange 15K–50K 28 n/a
15 Oct 2021 EW exchange 1K–15K 28 n/a
15 Oct 2021 SBUX exchange 1K–15K 28 n/a
15 Oct 2021 PEP exchange 1K–15K 28 n/a
15 Oct 2021 CSCO exchange 1K–15K 28 n/a
15 Oct 2021 MA exchange 1K–15K 28 n/a
15 Oct 2021 UBS exchange 1K–15K 28 n/a
15 Oct 2021 SPGI exchange 1K–15K 28 n/a
15 Oct 2021 TSM exchange 1K–15K 28 n/a
15 Oct 2021 SONY exchange 1K–15K 28 n/a
15 Oct 2021 STT exchange 1K–15K 28 n/a
15 Oct 2021 BBY exchange 1K–15K 28 n/a
15 Oct 2021 CLNE exchange 1K–15K 28 n/a
15 Oct 2021 GOOGL exchange 1K–15K 28 n/a
15 Oct 2021 AY exchange 1K–15K 28 n/a
15 Oct 2021 INTC exchange 1K–15K 28 n/a
15 Oct 2021 NVO exchange 1K–15K 28 n/a
15 Oct 2021 ORCL exchange 1K–15K 28 n/a
15 Oct 2021 V exchange 1K–15K 28 n/a
15 Oct 2021 SPG exchange 1K–15K 28 n/a
15 Oct 2021 CCEP exchange 1K–15K 28 n/a
15 Oct 2021 HD exchange 1K–15K 28 n/a
15 Oct 2021 MSFT exchange 1K–15K 28 n/a
15 Oct 2021 MRK exchange 1K–15K 28 n/a
15 Oct 2021 HON exchange 1K–15K 28 n/a
15 Oct 2021 SAP exchange 1K–15K 28 n/a
15 Oct 2021 PHG exchange 1K–15K 28 n/a
16 Aug 2021 HON buy 1K–15K 19 -9.1%
16 Aug 2021 GOOGL sell 1K–15K 72 n/a
16 Aug 2021 GSK sell 1K–15K 72 n/a
16 Aug 2021 ORANGEORAN sell 1K–15K 19 n/a
16 Aug 2021 BLK sell 1K–15K 72 n/a
16 Aug 2021 UBS buy 1K–15K 19 +1.2%
16 Aug 2021 SPG sell 1K–15K 72 n/a
16 Aug 2021 MRK buy 1K–15K 19 +1.5%
16 Aug 2021 BBY buy 1K–15K 72 +14.7%
16 Aug 2021 ABB sell 1K–15K 19 n/a
16 Aug 2021 FSLR buy 1K–15K 72 +14.5%
16 Aug 2021 AY buy 1K–15K 72 n/a
16 Aug 2021 SONY buy 1K–15K 72 +19.5%
16 Aug 2021 V buy 1K–15K 19 -14.9%
16 Aug 2021 HD buy 1K–15K 19 +10.7%
16 Aug 2021 MSFT buy 1K–15K 19 +9.3%
16 Aug 2021 CSCO buy 1K–15K 19 -2.7%
16 Aug 2021 XYL sell 1K–15K 72 n/a
16 Aug 2021 SBUX sell 1K–15K 19 n/a
16 Aug 2021 EW sell 1K–15K 19 n/a
16 Aug 2021 IRM sell 1K–15K 72 n/a
16 Aug 2021 IRM sell 1K–15K 19 n/a
5 Aug 2021 RUANE CUNNIFF & GOLDFARB INC sell 1K–15K 185 n/a
5 Aug 2021 RUANE CUNNIFF & GOLDFARB INC sell 100K–250K 185 n/a
9 Jul 2021 PG buy 1K–15K 8 +3.5%
3 Mar 2021 GOOGL sell 1K–15K 22 n/a
3 Mar 2021 SPG buy 1K–15K 22 +12.2%
3 Mar 2021 STT sell 1K–15K 22 n/a
3 Mar 2021 TSM sell 1K–15K 22 n/a
3 Mar 2021 HD sell 1K–15K 22 n/a
3 Mar 2021 CLNE buy 1K–15K 22 -45.3%
3 Mar 2021 CCEP sell 1K–15K 22 n/a
29 Dec 2020 SAP buy 1K–15K 53 n/a
29 Dec 2020 ABT sell 1K–15K 48 n/a
29 Dec 2020 ABT sell 1K–15K 53 n/a
29 Dec 2020 TSM sell 1K–15K 53 n/a
29 Dec 2020 JPM sell 1K–15K 53 n/a
29 Dec 2020 HOLX sell 1K–15K 53 n/a
29 Dec 2020 GSK buy 1K–15K 53 n/a
29 Dec 2020 MA buy 1K–15K 53 n/a
29 Dec 2020 BLK buy 1K–15K 53 n/a
29 Dec 2020 ELAN sell 1K–15K 53 n/a
29 Dec 2020 SKX sell 1K–15K 53 n/a
29 Dec 2020 SPGI buy 1K–15K 53 n/a
29 Dec 2020 AAPL sell 1K–15K 53 n/a
29 Dec 2020 VAW sell 1K–15K 53 n/a
29 Dec 2020 V sell 1K–15K 53 n/a
29 Dec 2020 PHG buy 1K–15K 53 n/a
29 Dec 2020 IRM buy 1K–15K 53 n/a
29 Dec 2020 MDT sell 1K–15K 53 n/a
29 Dec 2020 NGG sell 1K–15K 53 n/a
29 Dec 2020 INVH sell 1K–15K 53 n/a
29 Dec 2020 LHX sell 1K–15K 53 n/a
29 Dec 2020 FLIR sell 1K–15K 53 n/a
29 Dec 2020 ORCL buy 1K–15K 53 n/a
29 Dec 2020 INTC buy 1K–15K 53 n/a
29 Dec 2020 XYL buy 1K–15K 53 n/a
29 Dec 2020 PEP buy 1K–15K 53 n/a
29 Dec 2020 ABB buy 1K–15K 48 n/a
29 Dec 2020 ORANGEORAN buy 1K–15K 53 n/a
29 Dec 2020 AAPL sell 1K–15K 48 n/a

Size is the range Congress reports, not an exact amount. A stock with no ticker in the source is not scored. Sorting reorders the rows shown.

Frequently asked questions

How many stock trades has Katherine Clark filed?

Katherine Clark filed 143 stock trades between 2020-12-04 (4 December 2020) and 2026-07-15 (15 July 2026): 52 buys and 62 sells.

Did Katherine Clark's trades beat the market?

Across 13 scored buys, Katherine Clark averaged +1.2% against the S&P 500 (SPY) over the 90 days after disclosure, with 69% of them ahead of the index. That result is based on too few months of entries (3) to judge. Returns are measured from the first trading day after each filing, the earliest a follower could act.

How long does Katherine Clark take to file trades?

The median trade was filed 42 days after it happened, and 40% of trades were filed after the 45 day deadline. The STOCK Act gives members 45 days to report a trade, so followers see it after the price has often moved.

Can I copy Katherine Clark's trades?

Only after the filing appears, which means buying later and at a different price than the member paid. This site scores each buy from the day after it was filed. It is information, not investment advice.

Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Original filings: US House Clerk and Senate Office of Public Records. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-23 (23 September 2026). Latest filing by Katherine Clark: 2026-07-15 (15 July 2026). About these sources.

Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.