Who owns Waystar Holding Corp.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of WAY from SEC Form 13F filings across 301 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 301 institutions disclosed 211.7M shares of Waystar Holding Corp. worth $4.35B — about 110.3% of shares outstanding; the largest disclosed holder is EQT Fund Management S.a r.l.. Source: SEC Form 13F filings, parsed by EvidInvest.
301
13F holders
$4.35B
value, 2026 filers
110.3%
of shares outstanding (211.7M sh)
72
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of WAY's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | EQT Fund Management S.a r.l. | 24.9M | $510.8M | 59.2% | 13% | 0.0% |
| 2 | CANADA PENSION PLAN INVESTMENT BOARD | 19.0M | $390.6M | 0.2% | 9.9% | 0.0% |
| 3 | BlackRock, Inc. | 17.4M | $358.0M | 0.0% | 9.1% | +4.6% |
| 4 | FMR LLC | 15.0M | $308.9M | 0.0% | 7.8% | +0.6% |
| 5 | Bain Capital Investors LLC | 13.2M | $271.9M | 5.6% | 6.9% | 0.0% |
| 6 | Advent International, L.P. | 11.1M | $227.1M | 1.3% | 5.8% | 0.0% |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 6.6M | $136.0M | 0.0% | 3.5% | +3.4% |
| 8 | GOLDENTREE ASSET MANAGEMENT LP | 6.2M | $126.3M | 7.3% | 3.2% | +38.6% |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 5.2M | $106.8M | 0.0% | 2.7% | +1.1% |
| 10 | BANK OF MONTREAL /CAN/ | 5.2M | $106.5M | 0.0% | 2.7% | +50.3% |
| 11 | STATE STREET CORP | 4.6M | $93.9M | 0.0% | 2.4% | +6.6% |
| 12 | Artisan Partners Limited Partnership | 3.7M | $75.5M | 0.1% | 1.9% | -16.5% |
| 13 | MILLENNIUM MANAGEMENT LLC | 3.7M | $75.0M | 0.0% | 1.9% | +72.9% |
| 14 | NEUBERGER BERMAN GROUP LLC | 3.6M | $74.6M | 0.0% | 1.9% | -22.2% |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 3.1M | $63.4M | 0.0% | 1.6% | +6.8% |
| 16 | PRICE T ROWE ASSOCIATES INC /MD/ | 2.9M | $60.3M | 0.0% | 1.5% | +71.0% |
| 17 | UBS Group AG | 2.9M | $59.2M | 0.0% | 1.5% | +34.0% |
| 18 | Jupiter Topco LLCNEW | 2.9M | $59.0M | 0.0% | 1.5% | new |
| 19 | DIMENSIONAL FUND ADVISORS LP | 2.7M | $54.6M | 0.0% | 1.4% | +30.0% |
| 20 | BANK OF AMERICA CORP /DE/ | 2.6M | $53.0M | 0.0% | 1.3% | +25.1% |
| 21 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 2.3M | $46.7M | 0.0% | 1.2% | +43.8% |
| 22 | Diamond Hill Capital Management, LLC (Investment Advisor) | 2.1M | $43.3M | 0.3% | 1.1% | +31.6% |
| 23 | MORGAN STANLEY | 2.0M | $40.8M | 0.0% | 1% | +107.1% |
| 24 | BAMCO INC /NY/ | 1.8M | $36.7M | 0.1% | 0.9% | -23.1% |
| 25 | FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | 1.6M | $33.5M | 0.2% | 0.8% | +32.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.