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Investor profile

Bill Ackman

Pershing Square Capital · Founder & CEO · Net worth: ~$9B

Activist investor known for high-conviction, concentrated portfolios. Famous wins (General Growth) and famous losses (Valeant, Herbalife).

"Concentrated bets on high-quality businesses with activist catalysts."

Data verified 2026-05-15 · sourced from SEC EDGAR · view filing

Informational only — not investment advice. HoldLens tracks institutional positioning from public 13F filings. We are not a registered investment advisor and do not provide recommendations to buy or sell securities. Our 2026 backtest over 221 ticker-quarter pairs found the ConvictionScore has no predictive signal for forward returns (Pearson r = −0.12). The rankings describe what tracked superinvestors were accumulating or selling at the latest 13F snapshot — useful as market intelligence, not as personal investment advice. 13F data is reported with a 45-day SEC filing lag.

See the backtest →

Latest 13F: Q1 2026(7d ago)Next due: Q2 2026by 2026-08-14View on SEC EDGAR →● RSS — move alerts

Tracked positions

Top concentration

100%

Longest holding

Restaurant Brands International (since 2014)

Bill's portfolio concentration: top-1, top-5, top-10

Concentrated

Top 1 · BN

17.6%

Top 5 combined

78.2%

Top 10 combined

100.0%

Tracked positions

BNTop-5 zoneTop-10

Bill's single largest bet is BN at 17.6% of tracked positions. Top 5 names carry 78% of the weight — a focused approach without single-stock dominance.

Realized 10-year track record

Pershing Square Holdings PSH NAV (public)

See leaderboard →

10y CAGR

11.0%

net of fees

Alpha vs S&P

-2.1%

vs 13.1% benchmark

Win rate

50%

years beating S&P

Quality score

5.1

computed 0–10

Best year

+70%

Worst year

-21%

Cumulative 10y

2.9×

Volatility

29%

Bill Ackman's recent 13F moves: buys, adds, trims, and exits

Manager quality score: 5.1/10

Every tracked 13F move — buys, adds, trims, and exits — over the last two quarters.

Q1 2026

2 buys · 3 sells

Ticker	Activity	Share change	% portfolio
MSFT	Buy (new)	+5.65M	15.30%
AMZN	Add 19%	+1.84M	17.40%
HLT	Sell (exit)	-3.03M	0.00%
GOOG	Reduce 95%	-5.85M	0.70%
GOOGL	Reduce 95%	-646K	0.10%

Q4 2025

5 buys · 3 sells

Ticker	Activity	Share change	% portfolio
META	Buy (new)	+2.67M	11.40%
AMZN	Add 65%	+3.78M	14.30%
UBER	Add 35% Heavy add on the autonomous vehicle optionality.	+2.80M	3.10%
NKE	Add 20% Doubling down on the Nike turnaround thesis.	+3.20M	6.40%
BN	Add 10% Building Brookfield position.	+3.00M	10.40%
CMG	Sell (exit)	-21.54M	0.00%
GOOGL	Reduce 86%	-4.17M	1.40%
HHH	Reduce 4% Small trim on Howard Hughes.	-760K	12.70%

Q3 2025

3 buys · 2 sells

Ticker	Activity	Share change	% portfolio
NKE	Add 22% Nike turnaround thesis — first big add.	+3.50M	5.30%
BN	Add 15% Building Brookfield.	+4.50M	9.50%
UBER	Buy (new) Entered Uber on AV optionality.	+8.30M	2.40%
GOOGL	Reduce 10%	-519K	8.00%
CMG	Reduce 6% Small Chipotle trim after 2024 gains.	-1.80M	21.40%

Q2 2025

5 buys · 1 sell

Ticker	Activity	Share change	% portfolio
AMZN	Buy (new)	+5.82M	9.30%
GOOGL	Add 21%	+925K	6.90%
NKE	Add 18% First major Nike add — 3 consecutive quarters building.	+2.80M	4.50%
BN	Add 12% Continuing to build Brookfield.	+3.80M	8.70%
HHH	Add 8% Building Howard Hughes.	+1.42M	13.80%
CP	Sell (exit)	-14.80M	0.00%

Bill's sector breakdown

How the top 10 positions are diversified across 6 sectors. Weighted by stated portfolio percentage.

Technology

4 positions · AMZN, MSFT, META, GOOG

44.5%

44.5% of AUM

Financials

1 position · BN

17.6%

17.6% of AUM

Industrials

1 position · UBER

15.7%

15.7% of AUM

Consumer Discretionary

1 position · QSR

12.2%

12.2% of AUM

Real Estate

1 position · HHH

8.7%

8.7% of AUM

Other

2 positions · SEA, HTZ

1.3%

1.3% of AUM

Position intelligence · 13F-derived

How Ackman is sized + moving

Every position classified by both portfolio weight (size bucket) and recent move activity (trend bucket). A 22% Apple position building +5% this quarter signals different intent than a 1% starter trimmed in half. Descriptive analysis of 13F filings — not recommendation.

Core

≥10% positions

Significant

3–10%

Starter

1–3%

Small

<1%

Building

Steady

Trimming

New

Exit pending

Position	% portfolio	Size	Trend
BN BROOKFIELD CORP	17.6%	core	↑ building
AMZN AMAZON COM INC	17.4%	core	↑ building
UBER UBER TECHNOLOGIES INC	15.7%	core	↑ building
MSFT MICROSOFT CORP	15.3%	core	★ new
QSR RESTAURANT BRANDS INTL INC	12.2%	core	→ steady
META META PLATFORMS INC	11.1%	core	★ new
HHH HOWARD HUGHES HOLDINGS INC	8.7%	significant	→ steady
SEA SEAPORT ENTMT GROUP INC	0.8%	small	↑ building
GOOG ALPHABET INC	0.7%	small	↓ trimming
HTZ HERTZ GLOBAL HLDGS INC	0.5%	small	★ new
GOOGL ALPHABET INC	0.1%	small	↓ trimming

How to read: Size bucket from current 13F-filed portfolio weight. Trend bucket from the last 2 quarters of move activity (net delta >5% in either direction = building/trimming; new = first-appearance this quarter; exit pending = trimmed >50% last quarter). Data lag: SEC 13F filings are reported 45 days after quarter-end. This is descriptive intelligence — not investment advice.

Score explainability · 9-factor breakdown

What drives the ConvictionScore on Ackman's top positions

The HoldLens ConvictionScore combines 9 factors. This table shows the per-position breakdown — exactly which factors contribute and by how much for each of Ackman's top 8 holdings. Hover any header for factor definition. Empty cells (·) = neutral (no contribution).

Ticker	% port	Smart $	Insider	Track	Streak	Conc	Contra	Event	Dissent	Crowd
BN	17.6	+21	·	-4	+10	+7	·	·	+21	·
AMZN	17.4	+24	·	-4	+5	+9	·	·	+41	·
UBER	15.7	+16	·	-1	+5	+9	·	·	+14	·
MSFT	15.3	+23	·	·	+10	+9	·	·	+45	+5
QSR	12.2	+5	·	-8	·	+5	·	·	+6	·
META	11.1	+30	-2	-3	+10	+7	·	·	+33	+6
HHH	8.7	+4	·	-3	·	+7	·	·	+18	·
SEA	0.8	+14	·	-2	·	+3	·	·	+14	·

Factor definitions →

Smart $: Manager quality × consensus (0–30)
Insider: Form 4 net buy/sell (-15..+20)
Track: Buyer 10y CAGR × concentration (-10..+20)
Streak: Multi-quarter compounding (0–10)
Conc: Biggest position size as conviction (0–10)
Contra: Under-the-radar bonus (0–10)
Event: 8-K events last 90d (-15..+5)
Dissent: Sells subtract, weighted ×1.6 (0–60)
Crowd: Too many owners = priced in (0–10)

Factors are summed (positive add, penalties subtract), then clamped to the -100/+100 range. Each factor has a maximum contribution shown in parentheses next to its name. Read positive cells as bullish contributions, negative as bearish. See /learn/conviction-score-explained for the full methodology. ConvictionScore is descriptive synthesis of public filings — not investment advice.

Cross-portfolio overlap

Who else holds what Ackman holds

Top 6 highest-conviction overlap pairs containing Bill Ackman. Each page is the full intersection of two 13F-filed portfolios.

See all 435 overlap pairs →

Bill Ackman's top 10 disclosed holdings (Q1 2026)

Ticker	Company	% Portfolio	Shares (M)
BN	BROOKFIELD CORP Alternative asset manager play.	17.6%	59.7
AMZN	AMAZON COM INC	17.4%	11.45
UBER	UBER TECHNOLOGIES INC	15.7%	29.96
MSFT	MICROSOFT CORP	15.3%	5.65
QSR	RESTAURANT BRANDS INTL INC Tim Hortons + Burger King + Popeyes parent.	12.2%	22.65
META	META PLATFORMS INC	11.1%	2.66
HHH	HOWARD HUGHES HOLDINGS INC Master-planned community real estate.	8.7%	18.85
SEA	SEAPORT ENTMT GROUP INC	0.8%	5.02
GOOG	ALPHABET INC Reentered position 2023 — AI thesis.	0.7%	0.31
HTZ	HERTZ GLOBAL HLDGS INC	0.5%	15.24

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Dividend tax by country

Estimate your withholding on cross-border dividends

Your country of residenceCompany is domiciled inGross dividend (example)

Withholding rate

Domestic (no cross-border)

Tax withheld

$0.00

You'd receive

$1000.00

Of $1000 gross

Source & treaty reference

Treaty: Domestic — no cross-border withholding

Citation: IRC §§ 1441–1446 (withholding applies to foreign persons; US residents not subject to WHT on US-source dividends)

U.S. residents receiving U.S.-source dividends: no cross-border withholding; taxed on return at qualified (0/15/20%) or ordinary rates.

Estimates for educational purposes only. Tax rules change; consult a qualified tax professional for your specific situation. Dividend-tax treatment depends on holding period, account type (taxable vs. retirement), investor type (individual vs. pension vs. mutual fund), limitation-on-benefits tests, and other factors not modeled here.

Full dividend-tax rules for United States investors →

Want Bill move-alerts?

One email per 13F filing. Summarizes every new position, exit, and trim.

Investors with portfolios similar to Bill Ackman

Tracked managers whose top positions overlap with Bill's portfolio.

Li Lu

Himalaya Capital

1 shared position: GOOG

Mohnish Pabrai

Pabrai Investment Funds

1 shared position: GOOG

Chris Hohn

TCI Fund Management

1 shared position: CP

See all 29 investors ranked by portfolio similarity →

ETF replication

Which ETF replicates Bill's portfolio?

Closest match: QQQ · overlap score 29.3 across 1 shared top-10 names. Full ranked list of 5 ETFs →

Investing style

Bill is a activist investor

See 3 other activist managers tracked. Public letters, proxy fights, board nominations, settlement agreements.

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Per-quarter digests

What Bill Ackman did, quarter by quarter

Full move-by-move breakdown for each of the last 8 filed quarters.

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024

Historical trade analysis

The Herbalife short — Pershing Square's 2012-2018 activist campaign

Six-year multi-billion short campaign that ended at a loss. The public-record case study in activist shorting.

Read the deep-dive →

Frequently asked questions

Who is Bill Ackman?

Bill Ackman runs Pershing Square Capital as founder & ceo. Activist investor known for high-conviction, concentrated portfolios. Famous wins (General Growth) and famous losses (Valeant, Herbalife).

What fund does Bill Ackman run?

Bill Ackman is founder & ceo of Pershing Square Capital. Pershing Square Capital files SEC Form 13F-HR quarterly with the latest disclosure dated 2026-05-15 (Q1 2026). Full holdings, share counts, dollar values, and quarter-over-quarter changes are listed below.

What does Bill Ackman invest in?

Bill Ackman's Pershing Square Capital portfolio is disclosed quarterly via SEC Form 13F-HR. Each position below shows the ticker, share count, dollar value, percentage of portfolio, and quarter-over-quarter change. Data is sourced directly from SEC filings (public-domain regulatory disclosure).

What is Bill Ackman's investment philosophy?

Bill Ackman's stated investment philosophy: "Concentrated bets on high-quality businesses with activist catalysts.". Bill Ackman has been founder & ceo of Pershing Square Capital; estimated net worth ~$9B.

What is Bill Ackman's net worth?

Bill Ackman's estimated net worth is ~$9B. Bill Ackman runs Pershing Square Capital as founder & ceo; full 13F holdings disclosed quarterly with the SEC are listed below.

Data sourced from Pershing Square Capital 13F filings with the SEC. Approximate snapshot. Not investment advice.

Sister property: SecFilingDex — the encyclopedic reference for Form 13F (HR / NT / HR/A variants) and the regulatory citation behind every position shown above.