Bill Ackman's Microsoft Corporation (MSFT) position

Yes: as of Q1 2026, Bill Ackman holds 5.7M shares of MSFT worth $2.1B (15.3% of the disclosed portfolio). Last quarter the position was opened. First disclosed Q1 2026.

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Current value

$2.1B

Shares held

5.7M

% of portfolio

15.3%

Est. average buy price (i)

$418.80

Quarter-end price

$370.17

Estimated trade prices

Average price in quarters with purchases: $418.80

MSFT price vs Ackman's position

1Y 3Y 5Y MAX

Dates

Average closing price · filing quarter: $418.80
Price range · filing quarter: $356.77 – $483.47

Every quarterly change

Quarter	Action	Shares change	Est. value change	Δ Own	Shares held	Filing date
Q1 2026	New	+5.7M	+$2.4B	–	5.7M	May 15, 2026

Data through Q1 2026 · filed May 15, 2026

1 grouped rows from 1 quarters

Who else owns MSFT

FMR LLC

owns 2.6% of shares outstanding

Est. $70.4B · Shares: 190.2M

JPMorgan Chase & Co

owns 1.7% of shares outstanding

Est. $47.1B · Shares: 127.1M

Morgan Stanley

owns 1.7% of shares outstanding

Est. $46.2B · Shares: 124.9M

T. Rowe Price Associates

owns 1.6% of shares outstanding

Est. $43.4B · Shares: 117.2M

See all owners of MSFT →

More Ackman positions

Howard Hughes Holdings Inc.(HHH)

an amount we cannot price

8.7% of portfolio

Seaport Entertainment Group Inc.(SEG)

an amount we cannot price

0.8% of portfolio

Common questions

Does Bill Ackman own MSFT?

Yes. As of Q1 2026, Bill Ackman disclosed 5.7M shares of MSFT, worth $2.1B. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Bill Ackman buy MSFT?

Bill Ackman first disclosed a MSFT position in Q1 2026; 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 Bill Ackman sell MSFT?

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

How many shares of MSFT does Bill Ackman own?

Bill Ackman disclosed 5.7M shares of MSFT as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Bill Ackman pay for MSFT?

Bill Ackman's estimated average buy price for MSFT is $418.80, from quarter-average prices weighted by the shares added each quarter. 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.