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Jim Simons's 89bio, Inc. (ETNB) position

Not anymore: Jim Simons fully exited ETNB in Q4 2025. The position peaked at an amount we cannot price in Q1 2022.
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Value at exit
an amount we cannot price
Shares at exit
510K
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.

ETNB price vs Simons's position

Dates
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
Q4 2025 Exited −510K −100.0% 0 Feb 12, 2026
Q3 2025 Reduced −3K −0.6% 510K Nov 13, 2025
Q2 2025 Added +9K +1.8% 513K Aug 13, 2025
Q1 2025 Added +207K +69.4% 504K May 14, 2025
Q4 2024 Reduced −14K −4.6% 298K Feb 13, 2025
Q3 2024 Added +33K +11.7% 312K Nov 13, 2024
Q2 2024 New +279K 279K Aug 9, 2024
Q1 2023 Reduced −201K −93.5% 14K May 12, 2023
Q4 2022 Reduced −19K −8.0% 215K Feb 13, 2023
Q3 2022 Reduced −71K −23.3% 234K Nov 14, 2022
Q2 2022 Added +41K +15.7% 305K Aug 12, 2022
Q1 2022 New +263K 263K May 13, 2022
Data through Q4 2025 · filed Feb 12, 2026
12 grouped rows from 12 quarters

More Simons positions

Common questions

Does Jim Simons own ETNB?

Not currently. Jim Simons fully exited ETNB in Q4 2025, and the complete history is above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy ETNB?

Jim Simons first disclosed a ETNB position in Q1 2022; 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 ETNB?

Yes. Jim Simons reduced and then fully exited ETNB by Q4 2025; the reductions are in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of ETNB does Jim Simons own?

None as of the latest filing: Jim Simons has exited ETNB. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jim Simons pay for ETNB?

Jim Simons began building the ETNB 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.