Save your place

Sign in to WhoBought

Please try again later.

Stanley Druckenmiller's Arm Holdings plc American Depositary Shares (ARM) position

Yes: as of Q1 2026, Stanley Druckenmiller holds 107K shares of ARM worth $16M (0.5% of the disclosed portfolio). Last quarter the position was opened. First disclosed Q3 2024.
View full portfolio →
Current value
$16M
Shares held
107K
% of portfolio
0.5%
Est. average buy price (i)
$121.40
Quarter-end price
$151.28

Estimated trade prices

Average price in quarters with purchases
$138.17

ARM price vs Druckenmiller's position

Dates
$40$200$400$600202420252026New position of 22K shares · Q3 2024. Average closing price $142.09 · Price range $107.09–$186.4622KsharespurchasedAdded 157K shares (725.5%) · Q4 2024. Average closing price $140.99 · Price range $123.36–$161.82157KsharespurchasedNew position of 168K shares · Q3 2025. Average closing price $145.68 · Price range $131.16–$164.37168KsharespurchasedNew position of 107K shares · Q1 2026. Average closing price $121.40 · Price range $104.55–$157.07107Ksharespurchased
Average closing price · filing quarter
$121.40
Price range · filing quarter
$104.55 – $157.07

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 New +107K +$13M 107K May 15, 2026
Q3 2025 New +168K +$24M 168K Nov 14, 2025
Q4 2024 Added +157K +$22M +725.5% 178K Feb 14, 2025
Q3 2024 New +22K +$3.1M 22K Nov 14, 2024
Data through Q1 2026 · filed May 15, 2026
4 grouped rows from 4 quarters

More Druckenmiller positions

Common questions

Does Stanley Druckenmiller own ARM?

Yes. As of Q1 2026, Stanley Druckenmiller disclosed 107K shares of ARM, worth $16M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Stanley Druckenmiller buy ARM?

Stanley Druckenmiller first disclosed a ARM position in Q3 2024; 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 Stanley Druckenmiller sell ARM?

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

How many shares of ARM does Stanley Druckenmiller own?

Stanley Druckenmiller disclosed 107K shares of ARM as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Stanley Druckenmiller pay for ARM?

Stanley Druckenmiller's estimated average buy price for ARM is $121.40, 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.