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Ken Griffin's Neuronetics, Inc. (STIM) position

Yes: as of Q1 2026, Ken Griffin holds 77K shares of STIM worth an amount we cannot price (0.0% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
an amount we cannot price
Shares held
77K
% 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.

STIM price vs Griffin's position

Dates
$1.6$1.8$2$2.2← Earlier —8 purchases, 6 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 New +77K 77K May 15, 2026
Q1 2025 New +70K 70K May 15, 2025
Q2 2024 Added +13K +14.0% 104K Aug 14, 2024
Q1 2024 Added +9K +11.5% 91K May 15, 2024
Q4 2023 Reduced −111K −57.4% 82K Feb 14, 2024
Q3 2023 Reduced −49K −20.1% 193K Nov 14, 2023
Q2 2023 Added +77K +47.4% 241K Aug 14, 2023
Q1 2023 Added +157K +2,361.1% 164K May 15, 2023
Q4 2022 Reduced −29K −81.4% 7K Feb 14, 2023
Q3 2022 Reduced −61K −63.2% 36K Nov 14, 2022
Q2 2022 Added +45K +84.5% 97K Aug 15, 2022
Q1 2022 New +53K 53K May 16, 2022
Q3 2021 Reduced −31K −71.1% 13K Nov 15, 2021
Q2 2021 Reduced −39K −47.3% 44K Aug 16, 2021
Q1 2021 First covered 83K May 21, 2021
Data through Q1 2026 · filed May 15, 2026
15 grouped rows from 15 quarters

More Griffin positions

Common questions

Does Ken Griffin own STIM?

Yes. As of Q1 2026, Ken Griffin disclosed 77K shares of STIM, worth an amount we cannot price. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy STIM?

Ken Griffin held STIM since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell STIM?

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

How many shares of STIM does Ken Griffin own?

Ken Griffin disclosed 77K shares of STIM as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for STIM?

Ken Griffin began building the STIM 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.