Question 1

What percentage of WAB is owned by institutions?

Accepted Answer

Based on Q1 2026 13F filings, institutional ownership of Westinghouse Air Brake Technologies Corporation stands at 78.7%, held across 1,134 reporting institutions.

Question 2

Who is the largest institutional holder of WAB?

Accepted Answer

FMR LLC is the largest reported institutional holder of WAB, with approximately 19,722,429 shares worth $4.93B as of Q1 2026.

Question 3

Is WAB a hedge fund favorite?

Accepted Answer

No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of WAB.

Question 4

What is WAB's Smart Money Score?

Accepted Answer

Our composite Smart Money Score for WAB is 53 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.

Question 5

How many institutions bought WAB this quarter?

Accepted Answer

164 institutions opened new positions in WAB during Q1 2026, while 127 fully exited. 824 added to existing positions and 136 trimmed.

Question 6

How is institutional ownership of WAB changing?

Accepted Answer

WAB institutional ownership rose by 10.34 percentage points quarter-over-quarter, with a net change of +37 holders.

Question 7

How concentrated is WAB ownership among the top holders?

Accepted Answer

The top 10 institutions account for 53.9% of all reported 13F value in WAB, and the top 25 account for 69.9%.

Question 8

Where does this WAB institutional ownership data come from?

Accepted Answer

All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.

#	Institution	Shares Held	Market Value	QoQ Change	Ownership %	% of Fund
1	FMR LLC	19.7M	$4.93B	+4.3%	11.623%	0.27%
2	BlackRock, Inc.	13.7M	$3.43B	+2.4%	8.097%	0.06%
3	VANGUARD CAPITAL MANAGEMENT LLC	11.1M	$2.77B	—	6.531%	0.07%
4	STATE STREET CORP	7.7M	$1.93B	+1.1%	4.562%	0.07%
5	VANGUARD PORTFOLIO MANAGEMENT LLC	7.2M	$1.79B	—	4.218%	0.09%
6	GEODE CAPITAL MANAGEMENT, LLC	4.6M	$1.13B	+4.4%	2.686%	0.07%
7	FIL Ltd	3.5M	$875.2M	-4.2%	2.064%	0.68%
8	NORDEA INVESTMENT MANAGEMENT AB	3.6M	$863.9M	+15.8%	2.096%	0.81%
9	Select Equity Group, L.P.	2.9M	$730.6M	-17.9%	1.723%	4.01%
10	WELLINGTON MANAGEMENT GROUP LLP	2.5M	$627.3M	-5.9%	1.479%	0.12%
11	MORGAN STANLEY	2.5M	$615.5M	+19.1%	1.451%	0.04%
12	Invesco Ltd.	2.1M	$532.8M	-2.7%	1.256%	0.08%
13	Boston Partners	2.0M	$489.3M	-2.6%	1.153%	0.51%
14	NORTHERN TRUST CORP	1.7M	$431.1M	-0.9%	1.017%	0.06%
15	DIMENSIONAL FUND ADVISORS LP	1.7M	$431.0M	-0.9%	1.017%	0.09%
16	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	1.6M	$408.3M	-3.9%	0.953%	0.14%
17	FARALLON CAPITAL MANAGEMENT LLC	1.6M	$402.2M	-35.0%	0.949%	2.62%
18	UBS ASSET MANAGEMENT AMERICAS INC	1.4M	$347.6M	-7.8%	0.820%	0.07%
19	AQR CAPITAL MANAGEMENT LLC	1.3M	$328.4M	-2.5%	0.792%	0.15%
20	AMERICAN CENTURY COMPANIES INC	1.2M	$306.3M	+5.9%	0.722%	0.16%
21	GOLDMAN SACHS GROUP INC	1.2M	$296.7M	+28.3%	0.700%	0.03%
22	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	1.1M	$279.8M	+4.5%	0.660%	0.04%
23	Amundi	1.1M	$274.6M	-5.1%	0.647%	0.07%
24	KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC	1.1M	$264.1M	+0.6%	0.623%	0.78%
25	Nuveen, LLC	1.0M	$257.4M	+1.1%	0.607%	0.07%

Quarter	Inst. Holders	Δ Holders	Ownership %	Δ Ownership	Total 13F Value	Δ Value
Q1 2026	1,134	+3.4%	78.70%	+10.34 pp	$35.41B	+15%
Q4 2025	1,097	+3.1%	68.36%	+4.25 pp	$30.76B	+6.6%
Q3 2025	1,064	3.5%	64.11%	3.06 pp	$28.85B	4.6%
Q2 2025	1,103	+9.5%	67.17%	+9.54 pp	$30.22B	+17%
Q1 2025	1,007	2.1%	57.63%	3.48 pp	$25.93B	5.7%
Q4 2024	1,029	+8.7%	61.11%	+4.26 pp	$27.50B	+7.5%
Q3 2024	947	0.5%	56.85%	+5.13 pp	$25.58B	+9.9%
Q2 2024	952	—	51.72%	—	$23.27B	—

Westinghouse Air Brake Technologies Corporation (WAB) Institutional Ownership

AI Insights & Key Takeaways

Top Institutional Holders of WAB

Quarterly Institutional Activity

WAB Institutional Ownership by Quarter

WAB — Frequently Asked Questions