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Ken Griffin's Aura Biosciences, Inc. (AURA) position

Yes: as of Q1 2026, Ken Griffin holds 13K shares of AURA worth an amount we cannot price (0.0% of the disclosed portfolio). Last quarter the position was reduced by 81.8%. First disclosed Q4 2021.
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Current value
an amount we cannot price
Shares held
13K
% 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.

AURA price vs Griffin's position

Dates
$6.8$7$7.2$7.4← Earlier —10 purchases, 7 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 −56K −81.8% 13K May 15, 2026
Q4 2025 New +69K 69K Feb 17, 2026
Q2 2025 Reduced −151K −92.2% 13K Aug 14, 2025
Q1 2025 Added +156K +2,009.0% 164K May 15, 2025
Q4 2024 Added +7K +669.3% 8K Feb 14, 2025
Q3 2024 Reduced −2.3M −100.0% 1K Nov 14, 2024
Q2 2024 Reduced −1.3M −36.4% 2.3M Aug 14, 2024
Q1 2024 Added +45K +1.2% 3.7M May 15, 2024
Q4 2023 Added +1.1M +46.2% 3.6M Feb 14, 2024
Q3 2023 Added +23K +1.0% 2.5M Nov 14, 2023
Q2 2023 Reduced −42K −1.7% 2.5M Aug 14, 2023
Q1 2023 Reduced −235K −8.6% 2.5M May 15, 2023
Q4 2022 Added +425K +18.4% 2.7M Feb 14, 2023
Q3 2022 Added +159 0.0% 2.3M Nov 14, 2022
Q2 2022 Reduced −4K −0.2% 2.3M Aug 15, 2022
Q1 2022 Added +2K +0.1% 2.3M May 16, 2022
Q4 2021 New +2.3M 2.3M Feb 14, 2022
Data through Q1 2026 · filed May 15, 2026
17 grouped rows from 17 quarters

More Griffin positions

Common questions

Does Ken Griffin own AURA?

Yes. As of Q1 2026, Ken Griffin disclosed 13K shares of AURA, 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 AURA?

Ken Griffin first disclosed a AURA position in Q4 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 Ken Griffin sell AURA?

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

How many shares of AURA does Ken Griffin own?

Ken Griffin disclosed 13K shares of AURA 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 AURA?

Ken Griffin began building the AURA 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.