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Jim Simons's Keros Therapeutics, Inc. (KROS) position

Yes: as of Q1 2026, Jim Simons holds 453K shares of KROS worth an amount we cannot price (0.0% of the disclosed portfolio). Last quarter the position was reduced by 23.4%. First disclosed Q3 2021.
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Current value
an amount we cannot price
Shares held
453K
% of portfolio
0.0%
Quarter-end price
No quarter-end price available

Average buy price is hidden here because at least one covered purchase quarter has no usable local mean price.

KROS price vs Simons's position

Dates
$10.55$10.6$10.65← Earlier —8 purchases, 5 sells
Average closing price · filing quarter
Price range · filing quarter

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −138K −23.4% 453K May 14, 2026
Q4 2025 Added +437K +282.5% 592K Feb 12, 2026
Q3 2025 Added +8K +5.5% 155K Nov 13, 2025
Q2 2025 New +147K 147K Aug 13, 2025
Q2 2024 New +14K 14K Aug 9, 2024
Q3 2023 Reduced −25K −36.1% 44K Nov 14, 2023
Q2 2023 Reduced −53K −43.5% 68K Aug 11, 2023
Q1 2023 Added +29K +31.8% 121K May 12, 2023
Q4 2022 Reduced −5K −5.5% 92K Feb 13, 2023
Q3 2022 Reduced −44K −31.4% 97K Nov 14, 2022
Q2 2022 Added +136K +2,573.6% 142K Aug 12, 2022
Q1 2022 New +5K 5K May 13, 2022
Q3 2021 New +25K 25K Nov 12, 2021
Data through Q1 2026 · filed May 14, 2026
13 grouped rows from 13 quarters

More Simons positions

Common questions

Does Jim Simons own KROS?

Yes. As of Q1 2026, Jim Simons disclosed 453K shares of KROS, worth an amount we cannot price. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy KROS?

Jim Simons first disclosed a KROS position in Q3 2021; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jim Simons sell KROS?

The quarter-by-quarter table above shows each sale and reduction Jim Simons disclosed in KROS. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of KROS does Jim Simons own?

Jim Simons disclosed 453K shares of KROS as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jim Simons pay for KROS?

Jim Simons began building the KROS position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.