Waystar Holding Corp.
Waystar Holding Corp. (WAY) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · WAY · as of Mar 31, 2025
Ownership Breakdown
240
Institutional Holders
▲ 63 vs Q4
$6.55B
Total Inst. Value
▲ $1.94B vs Q4
191.81M
Shares Outstanding
freeFloat 72.98%
137.86M
13F Shares Held
▲ 12.11M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
WAY largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
CANADA PENSION PLAN INVESTMENT BOARD services-computer integrated systems design | 29.69M | 17.24% | 17.24% | $1.11T | May 15, 2025 | ▼ 7.52M |
BAIN CAPITAL INVESTORS LLC services-computer integrated systems design | 21.75M | 12.63% | 12.63% | $812.75B | May 15, 2025 | ▼ 6.23M |
VANGUARD GROUP INC services-computer integrated systems design | 8.09M | 4.70% | 4.70% | $302.26B | May 9, 2025 | ▲ 3.10M |
BLACKROCK, INC. services-computer integrated systems design | 5.90M | 3.43% | 3.43% | $220.54B | May 2, 2025 | ▲ 2.54M |
NEUBERGER BERMAN GROUP LLC services-computer integrated systems design | 4.76M | 2.77% | 2.77% | $177.89B | May 13, 2025 | ▲ 619.3K |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC services-computer integrated systems design | 4.23M | 2.46% | 2.46% | $157.94B | May 9, 2025 | NEW |
TPG GP A, LLC services-computer integrated systems design | 3.54M | 2.06% | 2.06% | $132.38B | May 15, 2025 | ▼ 554.8K |
ARROWMARK COLORADO HOLDINGS LLC services-computer integrated systems design | 3.36M | 1.95% | 1.95% | $125.62B | May 15, 2025 | ▼ 119.8K |
FMR LLC services-computer integrated systems design | 2.92M | 1.70% | 1.70% | $109.12B | May 12, 2025 | ▲ 2.14M |
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND services-computer integrated systems design | 2.15M | 1.25% | 1.25% | $80.50B | May 14, 2025 | ▲ 713.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
35
Increased
+25.54M shares7
New Positions
first time holders8
Decreased
−16.54M shares0
Sold Out
fully exitedNet shares change (top 50)
+9.00M
+25.54M / −16.54M
Net new holders
+34
7 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
WAY insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
7
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
DeMichiei Robert director | Jun 3, 2026 | Award | 9,303 | — | — | 46.2K | Form 4 ↗ |
Gupta Aashima director | Jun 3, 2026 | Award | 9,303 | — | — | 14.4K | Form 4 ↗ |
Roman Michael F director | Jun 3, 2026 | Award | 9,303 | — | — | 14.4K | Form 4 ↗ |
Riefberg Vivian E. director | Jun 3, 2026 | Award | 9,303 | — | — | 23.1K | Form 4 ↗ |
MILLER HEIDI director | Jun 3, 2026 | Award | 9,303 | — | — | 40.9K | Form 4 ↗ |
Hung Priscilla director | Jun 3, 2026 | Award | 9,303 | — | — | 23.1K | Form 4 ↗ |
DRISCOLL JOHN PATRICK Chairperson | Jun 3, 2026 | Award | 9,303 | — | — | 100.1K | Form 4 ↗ |
Miller Melissa F. (Missy) Chief Marketing Officer | Mar 9, 2026 | Award | 61,703 | — | — | 255.0K | Form 4 ↗ |
Wittman Kimberly S. Chief People Officer | Mar 9, 2026 | Award | 61,703 | — | — | 273.0K | Form 4 ↗ |
PACKER GREGORY R Chief Legal officer | Mar 9, 2026 | Award | 65,817 | — | — | 197.0K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Waystar Holding Corp. (WAY) is primarily owned by institutional investors, who hold approximately 71.9% of total shares outstanding. Company insiders own approximately 27.02%, while retail and public investors account for the remaining 1.11%.
The largest institutional shareholder of Waystar Holding Corp. is CANADA PENSION PLAN INVESTMENT BOARD, holding approximately 29.69 million shares — equal to 17.24% of outstanding shares — as of March 31, 2025.
A total of 240 institutional investors currently hold WAY stock, with a combined institutional value of approximately $6.55 billion as of the most recent 13F filing period.
Frequently asked questions
WAY ownershipWaystar Holding Corp. (WAY) is primarily owned by institutional investors, who hold approximately 71.9% of shares. The largest shareholder is CANADA PENSION PLAN INVESTMENT BOARD with a 17.24% stake. Company insiders hold 27.02%. Data sourced from SEC Form 13F as of March 31, 2025.