About Bill Ackman
**Bill Ackman / Pershing Square Capital Management**
Bill Ackman serves as the founder and Chief Executive Officer of Pershing Square Capital Management, a New York-based activist-oriented investment manager. As of the Q1 2026 filing dated May 15, 2026, Pershing Square disclosed a 13F portfolio valued at approximately $13.7 billion spread across 11 reported positions, reflecting a concentrated and selective approach to public equity holdings.
The latest filing shows the portfolio anchored by five core positions accounting for 78.2% of total reported assets. Brookfield Corp (BN) represents the largest single allocation at 17.6%, followed closely by Amazon.com (AMZN) at 17.4%, Uber Technologies (UBER) at 15.7%, Microsoft Corp (MSFT) at 15.3%, and Restaurant Brands International (QSR) at 12.2%. Consumer Discretionary is the dominant sector exposure, comprising 45.3% of the total portfolio, with Technology and Financials also represented among the remaining positions. The portfolio's structure is consistent with a balanced strategy concentrated in a small number of large-cap and global holdings.
Quarter-over-quarter activity reflects measured repositioning. Pershing Square disclosed one new position initiated during the period and exited one existing holding in full. One position was increased in size, while five positions were reduced relative to the prior quarter's filing. The net result is a portfolio that maintains broad concentration in its top holdings while reflecting incremental reallocation across several existing names. The 11-position breadth remains unchanged from the prior period.
All data sourced from SEC 13F filings.
Frequently asked questions
- What stocks does Bill Ackman own?
- As of the Q1 2026 13F filing, Bill Ackman disclosed 11 positions. The largest holdings include BN (17.6%), AMZN (17.4%), UBER (15.7%).
- What is Bill Ackman's largest holding?
- BN (BROOKFIELD CORP), representing 17.6% of the disclosed portfolio.
- What sectors is Bill Ackman exposed to?
- The portfolio's largest sector exposures are Consumer Discretionary (45.3%), Unclassified (27.6%), Information Technology (15.3%). 4 sectors are represented in total.
- How concentrated is Bill Ackman's portfolio?
- The top 5 holdings represent 78.2% of total portfolio value.
- When did Bill Ackman last file a 13F?
- Bill Ackman filed the most recent Form 13F-HR for the period ending 2026-03-31, dated May 15, 2026.
- What changed in Bill Ackman's portfolio last quarter?
- Quarter-over-quarter changes: 1 new positions, 1 exits, 1 increased, 5 reduced.
Bill Ackman
Pershing Square Capital · Activist / concentrated
- Holdings
- 11
- Turnover (LTM)
- 31%
- Persistence (QoQ)
- 85%
- First 13F
- Q3 2025
Investor Fingerprint
iBill Ackman
Descriptive snapshot computed from this investor's most recent public 13F filing dated 2026-03-31. Educational research, not investment advice.
- Concentration: 78 (Very High)
- Sizing: 14 (Low)
- Turnover: 31 (Above Avg.)
- Persistence: 85 (Very High)
Portfolio DNA
Categorical breakdown from this investor's 13F. Hover any row for the formula.
- Highly ConcentratedVery High
- Moderate SkewAbove Avg.
- Sector-FocusedHigh
- Steady AdjusterAbove Avg.
- Persistent ThesisVery High
- Tech-HeavyHigh
Six descriptive labels derived from public 13F data. Additional axes (Value, Quality, Growth, Dividends) require fundamentals data and ship in v2.
Mixed signals across concentration, turnover, and persistence.
The portfolio is highly concentrated, with 11 total holdings and the top five positions accounting for 78.2% of a $13.7 billion portfolio. Position persistence stands at 84.7% quarter-over-quarter, reflecting low turnover of 31.1% over the last twelve months and a stable, largely unchanged set of holdings. Sector tilt registers at 31.9 and AI/tech exposure at 44.5, indicating a meaningful but not exclusive orientation toward technology-adjacent positions within an otherwise compact, high-weight-per-holding structure.
AI-generated analysis. This summary is produced by an automated language model from public regulatory filings. It may contain errors, omissions, or outdated information, and is provided for educational research only — not as financial, legal, or tax advice, a recommendation, or a solicitation to buy or sell any security.
Investor Macro Outlook™
ProPortfolio-positioning signal · 2026-Q1 · based on public filings
Unlock Investor Macro Outlook™ with Pro
See the implied macro positioning of every tracked super investor — inflation view, GDP outlook, rate bias, growth vs value tilt, and more. Derived from public 13F filing data. For research purposes only.
Start 7-day free trialInferred from public filing data. For informational purposes only. Not financial advice.
Investor Inflation & Dollar Outlook™
Portfolio-positioning signal · based on public 13F filings · not investment advice
Inflation
40/100
U.S. Dollar
30/100
Portfolio allocation across inflation-sensitive and defensive assets does not show a strong directional tilt, suggesting a broadly balanced implied inflation view based on observable holdings. Dollar-sensitive positioning — including exposure to short-duration domestic assets and limited international/commodity allocation — reflects a relative dollar-strength signal from observable holdings. This analysis is based on public 13F filing data and observable portfolio positioning only. It is for informational purposes only and should not be considered investment advice.
This analysis is based on public filings and portfolio positioning. It is for informational purposes only and should not be considered investment advice. Scores represent implied views inferred from observable 13F sector weights and quarter-over-quarter changes only — not predictions or guaranteed forecasts.
Portfolio Analytics™
Based on latest 13F- BN17.6%
- AMZN17.4%
- UBER15.7%
- MSFT15.3%
- QSR12.2%
- +2 more
Top 10 Holdings
| # | Stock | % Portfolio | Cumulative |
|---|---|---|---|
| 1 | BN BROOKFIELD CORP | 17.6% | 17.6% |
| 2 | AMZN AMAZON COM INC | 17.4% | 35.0% |
| 3 | UBER UBER TECHNOLOGIES INC | 15.7% | 50.7% |
| 4 | MSFT MICROSOFT CORP | 15.3% | 66.0% |
| 5 | QSR RESTAURANT BRANDS INTL INC | 12.2% | 78.2% |
| 6 | META META PLATFORMS INC | 11.1% | 89.3% |
| 7 | HHH HOWARD HUGHES HOLDINGS INC | 8.7% | 98.0% |
| 8 | 812215200 SEAPORT ENTMT GROUP INC | 0.8% | 98.8% |
| 9 | GOOGL ALPHABET INC | 0.7% | 99.4% |
| 10 | HTZ HERTZ GLOBAL HLDGS INC | 0.5% | 99.9% |
Sector Allocation
- Consumer Discretionary45.3%
- Unclassified27.6%
- Information Technology15.3%
- Communication Services11.8%
About
Founder and CEO of Pershing Square Capital Management. Activist investor known for concentrated positions.
Plain-English explanations of every quarter’s portfolio shifts, generated from each investor’s public 13F filings.
Start 7-day free trialTop 10 holdings
- BNBROOKFIELD CORP$2.4B17.6%
- AMZNAMAZON COM INC$2.4B17.4%
- UBERUBER TECHNOLOGIES INC$2.2B15.7%
- MSFTMICROSOFT CORP$2.1B15.3%
- QSRRESTAURANT BRANDS INTL INC$1.7B12.2%
- METAMETA PLATFORMS INC$1.5B11.1%
- HHHHOWARD HUGHES HOLDINGS INC$1.2B8.7%
- Ticker unavailableCUSIP 812215200SEAPORT ENTMT GROUP INC$107.9M0.8%
- GOOGLALPHABET INC$89.4M0.7%
- HTZHERTZ GLOBAL HLDGS INC$70.3M0.5%
Sector exposure
- Consumer Discretionary45.3%
- Unclassified27.6%
- Information Technology15.3%
- Communication Services11.8%
New positions
1- MSFTMICROSOFT CORPNew
Opening a new position can suggest the manager sees value or a thesis worth committing capital to. It does not necessarily mean they are bullish on the broader market — concentrated managers add positions infrequently while quants may rotate constantly.
Educational research only. Not financial advice.
Increased
1- AMZNAMAZON COM INCIncreased
Adding to an existing position may indicate higher conviction, scaling into a thesis, or rebalancing toward a target weight. It does not necessarily mean the position is undervalued at the current price.
Educational research only. Not financial advice.
Reduced
5- BNBROOKFIELD CORPReduced
- GOOGLALPHABET INCReduced
- METAMETA PLATFORMS INCReduced
- QSRRESTAURANT BRANDS INTL INCReduced
- UBERUBER TECHNOLOGIES INCReduced
Trimming a position may suggest portfolio rebalancing, profit-taking, or risk management. It does not necessarily mean the manager has turned bearish on the underlying company.
Educational research only. Not financial advice.
Sold out
1- HLTHILTON WORLDWIDE HLDGS INCSold
Fully exiting a position can suggest that the manager's thesis has played out, was wrong, or that capital is being redeployed elsewhere. It does not mean the company is broken — exits are often as much about portfolio fit as about the security itself.
Educational research only. Not financial advice.
Current holdings
Reported portfolio value: $13.7B
Reported values come from public SEC filings and may be delayed up to 45 days. Not investment advice.
Sourced from SEC EDGAR public filings
- BNReducedBROOKFIELD CORPPosition value$2.4BPortfolio %17.62%Delta Shares-2.78%
- AMZNIncreasedAMAZON COM INCPosition value$2.4BPortfolio %17.39%Delta Shares19.19%
- UBERReducedUBER TECHNOLOGIES INCPosition value$2.2BPortfolio %15.71%Delta Shares-0.82%
- MSFTNewMICROSOFT CORPPosition value$2.1BPortfolio %15.26%Delta Shares—
- QSRReducedRESTAURANT BRANDS INTL INCPosition value$1.7BPortfolio %12.20%Delta Shares-0.97%
- METAReducedMETA PLATFORMS INCPosition value$1.5BPortfolio %11.10%Delta Shares-0.48%
- HHHUnchangedHOWARD HUGHES HOLDINGS INCPosition value$1.2BPortfolio %8.70%Delta Shares0.00%
- Ticker unavailableCUSIP 812215200UnchangedSEAPORT ENTMT GROUP INCPosition value$107.9MPortfolio %0.79%Delta Shares0.00%
- GOOGLReducedALPHABET INCPosition value$89.4MPortfolio %0.65%Delta Shares-54.04%
- HTZUnchangedHERTZ GLOBAL HLDGS INCPosition value$70.3MPortfolio %0.51%Delta Shares0.00%
- GOOGLReducedALPHABET INCPosition value$9.3MPortfolio %0.07%Delta Shares-54.04%
- HLTSoldHILTON WORLDWIDE HLDGS INCPosition value$0Portfolio %0.00%Delta Shares-100.00%
Sector breakdown
- Consumer Discretionary45.3%
- Unclassified27.6%
- Information Technology15.3%
- Communication Services11.8%
Filing history
- View on SEC ↗13F-HR · Q1 2026Filed May 15, 2026