Save your place

Sign in to WhoBought

Please try again later.

Ken Griffin's Quantum Computing, Inc. (QUBT) position

Yes: as of Q1 2026, Ken Griffin holds 861K shares of QUBT worth an amount we cannot price (0.0% of the disclosed portfolio). Last quarter the position was reduced by 63.9%. First disclosed Q1 2022.
View full portfolio →
Current value
an amount we cannot price
Shares held
861K
% 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.

QUBT price vs Griffin's position

Dates
$7.8$8$8.2$8.4← Earlier —7 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 −1.5M −63.9% 861K May 15, 2026
Q4 2025 Reduced −4.0M −62.7% 2.4M Feb 17, 2026
Q3 2025 Added +4.0M +165.8% 6.4M Nov 14, 2025
Q2 2025 Added +2.2M +954.2% 2.4M Aug 14, 2025
Q1 2025 New +229K 229K May 15, 2025
Q3 2024 Added +68K +442.4% 84K Nov 14, 2024
Q2 2024 Reduced −151K −90.8% 15K Aug 14, 2024
Q1 2024 Reduced −4K −2.1% 167K May 15, 2024
Q4 2023 New +170K 170K Feb 14, 2024
Q1 2023 Reduced −15K −70.8% 6K May 15, 2023
Q4 2022 New +21K 21K Feb 14, 2023
Q1 2022 New +18K 18K May 16, 2022
Data through Q1 2026 · filed May 15, 2026
12 grouped rows from 12 quarters

More Griffin positions

Common questions

Does Ken Griffin own QUBT?

Yes. As of Q1 2026, Ken Griffin disclosed 861K shares of QUBT, 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 QUBT?

Ken Griffin first disclosed a QUBT 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 Ken Griffin sell QUBT?

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

How many shares of QUBT does Ken Griffin own?

Ken Griffin disclosed 861K shares of QUBT 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 QUBT?

Ken Griffin began building the QUBT 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.