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Cathie Wood's Seres Therapeutics, Inc. (MCRB) position

Not anymore: Cathie Wood fully exited MCRB in Q3 2021. The position peaked at an amount we cannot price in Q1 2021.
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Value at exit
an amount we cannot price
Shares at exit
9.7M
Quarter-end price
No quarter-end price available

Average buy price is hidden here: this position was already held before our 13F history begins, so the opening cost is unknown and any average would understate it.

MCRB price vs Wood'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
Q3 2021 Exited −9.7M −100.0% 0 Nov 12, 2021
Q2 2021 Reduced −2.1M −18.1% 9.7M Aug 5, 2021
Q1 2021 First covered 11.9M May 13, 2021
Data through Q3 2021 · filed Nov 12, 2021
3 grouped rows from 3 quarters

More Wood positions

Common questions

Does Cathie Wood own MCRB?

Not currently. Cathie Wood fully exited MCRB in Q3 2021, and the complete history is above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Cathie Wood buy MCRB?

Cathie Wood held MCRB 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 Cathie Wood sell MCRB?

Yes. Cathie Wood reduced and then fully exited MCRB by Q3 2021; 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 MCRB does Cathie Wood own?

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

What price did Cathie Wood pay for MCRB?

Cathie Wood began building the MCRB 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.