Investigate / reported ownership
MSFT
Microsoft Corp
36 tracked reported owners · snapshot updated 2026-10-04. Delayed disclosures, not live holdings or an investment recommendation.
Who reports owning MSFT?
Select a manager to inspect their portfolio. Reports may cover different quarters; portfolio weights describe disclosed long 13F holdings, not total economic exposure.
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Dodge & Cox Funds | 2.5% | 40q | $4.79B | 12,836,229 |
| 2 | Bill Ackman | 15.3% | — 1q | $2.09B | 5,654,078 |
| 3 | Joel Greenblatt | 0.8% | 40q | $1.41B | 3,770,405 |
| 4 | AltaRock Partners | 20.5% | 21q | $871M | 2,334,482 |
| 5 | Chase Coleman | 3.5% | 39q | $846M | 2,266,913 |
Go beyond ownership.
Customers pay for cloud services, software licensing and support, online advertising and devices.
Question to investigate: Can cloud and AI infrastructure investment convert into durable growth without eroding operating margins?
Company research reviewed 2026-10-02; a dated source-linked starting point, not the investors’ stated reasons.
Understand the business and investment case →Filing dates and original SEC sources
- Dodge & Cox Funds · 2026Q2 · filed 2026-08-13 ↗
- Bill Ackman · 2026Q1 · filed 2026-05-15 ↗
- Joel Greenblatt · 2026Q2 · filed 2026-09-02 ↗
- AltaRock Partners · 2026Q2 · filed 2026-08-17 ↗
- Chase Coleman · 2026Q2 · filed 2026-08-14 ↗
- Polen Capital Management · 2026Q2 · filed 2026-08-04 ↗
- Mairs & Power Funds · 2026Q2 · filed 2026-08-14 ↗
- First Eagle Investment Management · 2026Q2 · filed 2026-08-24 ↗
- Viking Global Investors · 2026Q2 · filed 2026-08-14 ↗
- Yacktman Asset Management · 2026Q2 · filed 2026-08-11 ↗
- Vulcan Value Partners · 2026Q2 · filed 2026-08-10 ↗
- Lee Ainslie · 2026Q2 · filed 2026-08-14 ↗
- Duan Yongping · 2026Q2 · filed 2026-08-14 ↗
- Jensen Investment Management · 2026Q2 · filed 2026-08-07 ↗
- AKO Capital · 2026Q2 · filed 2026-08-12 ↗
- Thomas Gayner · 2026Q2 · filed 2026-07-31 ↗
- Terry Smith · 2026Q2 · filed 2026-08-14 ↗
- Triple Frond Partners · 2026Q2 · filed 2026-08-13 ↗
- David Katz · 2026Q2 · filed 2026-07-15 ↗
- Wallace Weitz · 2026Q2 · filed 2026-08-12 ↗
- Christopher Davis · 2026Q2 · filed 2026-08-11 ↗
- David Rolfe · 2026Q2 · filed 2026-08-14 ↗
- William Von Mueffling · 2026Q2 · filed 2026-07-29 ↗
- Bill Nygren · 2026Q2 · filed 2026-08-14 ↗
- Dennis Hong · 2026Q2 · filed 2026-08-14 ↗
- Torray Funds · 2026Q2 · filed 2026-07-30 ↗
- Robert Vinall · 2026Q2 · filed 2026-08-14 ↗
- Robert Olstein · 2026Q1 · filed 2026-04-21 ↗
- Hillman Capital Management · 2026Q2 · filed 2026-08-14 ↗
- Glenn Greenberg · 2026Q2 · filed 2026-08-14 ↗
- Thomas Russo · 2026Q2 · filed 2026-08-13 ↗
- Kahn Brothers Group · 2026Q2 · filed 2026-08-17 ↗
- Francois Rochon · 2026Q2 · filed 2026-08-26 ↗
- Richard Pzena · 2026Q2 · filed 2026-08-07 ↗
- Christopher Bloomstran · 2026Q2 · filed 2026-08-14 ↗
- Sarah Ketterer · 2026Q2 · filed 2026-08-13 ↗
A material reported change · Q2 2026
Joel Greenblatt increased reported MSFT shares by 42.9%.
Holdings as of Jun 30, 2026 · filed Sep 2, 2026. Position at period end: 0.8% of the reported portfolio. The filing does not reveal the trade date, price, or reason.
Reported position changes
Net disclosed share changes—not individual trades or execution dates. NEW has no prior-position percentage comparison; EXIT weight refers to the previous report.
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| AltaRock Partners | ADD | 20.5% | +25% | $871M | Aug 17, 2026 |
| Chris Hohn | EXIT | 2.2% | -100% | $0 | Aug 14, 2026 |
| Christopher Bloomstran | NEW | <0.1% | New position | $239K | Aug 14, 2026 |
| David Rolfe | ADD | 6.9% | +21% | $33M | Aug 14, 2026 |
| David Tepper | EXIT | 0.6% | -100% | $0 | Aug 14, 2026 |
| Dennis Hong | NEW | 7.3% | New position | $17M | Aug 14, 2026 |
| Duan Yongping | TRIM | 1.5% | -26% | $281M | Aug 14, 2026 |
| Glenn Greenberg | ADD | <0.1% | +111% | $2M | Aug 14, 2026 |
| Robert Vinall | ADD | 3.2% | +31% | $12M | Aug 14, 2026 |
| Terry Smith | TRIM | 4.2% | -24% | $189M | Aug 14, 2026 |
| William Von Mueffling | TRIM | 3.9% | -94% | $26M | Jul 29, 2026 |
| Bill Ackman | NEW | 15.3% | New position | $2.09B | May 15, 2026 |
- ADDAltaRock Partners20.5%Δ +25%·$871M·filed Aug 17, 2026
- EXITChris Hohn2.2%Δ -100%·$0·filed Aug 14, 2026
- NEWChristopher Bloomstran<0.1%Δ New position·$239K·filed Aug 14, 2026
- ADDDavid Rolfe6.9%Δ +21%·$33M·filed Aug 14, 2026
- EXITDavid Tepper0.6%Δ -100%·$0·filed Aug 14, 2026
- NEWDennis Hong7.3%Δ New position·$17M·filed Aug 14, 2026
- TRIMDuan Yongping1.5%Δ -26%·$281M·filed Aug 14, 2026
- ADDGlenn Greenberg<0.1%Δ +111%·$2M·filed Aug 14, 2026
- ADDRobert Vinall3.2%Δ +31%·$12M·filed Aug 14, 2026
- TRIMTerry Smith4.2%Δ -24%·$189M·filed Aug 14, 2026
- TRIMWilliam Von Mueffling3.9%Δ -94%·$26M·filed Jul 29, 2026
- NEWBill Ackman15.3%Δ New position·$2.09B·filed May 15, 2026
Explore earlier changes and contrasting evidence
Selected historical records. Retrospective outcomes do not establish predictive skill.
Compare the reported increases and reductions →Q2 2026
filed Sep 2, 2026
64d lag
+1.7% vs SPY
21 sessions after disclosure
direction supported so far
Q2 2026
filed Aug 24, 2026
55d lag
+4.5% vs SPY
28 sessions after disclosure
direction supported so far
Q2 2026
filed Aug 17, 2026
48d lag
+7.1% vs SPY
33 sessions after disclosure
direction supported so far
Q2 2026
filed Aug 14, 2026
45d lag
+8.1% vs SPY
34 sessions after disclosure
direction supported so far
Q2 2026
filed Aug 14, 2026
45d lag
+8.1% vs SPY
34 sessions after disclosure
direction supported so far
Q2 2026
filed Aug 14, 2026
45d lag
+8.1% vs SPY
34 sessions after disclosure
direction not supported so far
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Long US 13F disclosures omit shorts and can be amended. CUSIP 594918104. No current price, valuation or manager motive is inferred.