Guardant Health, Inc.
Guardant Health, Inc. (GH) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · GH · as of Mar 31, 2025
Ownership Breakdown
364
Institutional Holders
▲ 44 vs Q4
$5.10B
Total Inst. Value
▲ $1.45B vs Q4
132.60M
Shares Outstanding
freeFloat 96.39%
119.71M
13F Shares Held
▲ 214,530 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
GH largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC services-medical laboratories | 12.08M | 9.75% | 9.75% | $514.67B | May 9, 2025 | ▲ 28.8K |
BLACKROCK, INC. services-medical laboratories | 11.17M | 9.02% | 9.02% | $476.01B | May 2, 2025 | ▼ 527.7K |
DEEP TRACK CAPITAL, LP services-medical laboratories | 5.44M | 4.39% | 4.39% | $231.90B | May 15, 2025 | ▼ 975.8K |
CAPITAL INTERNATIONAL INVESTORS services-medical laboratories | 5.15M | 4.16% | 4.16% | $219.29B | May 12, 2025 | ▲ 674.5K |
BAILLIE GIFFORD & CO services-medical laboratories | 5.06M | 4.09% | 4.09% | $215.60B | May 7, 2025 | ▼ 388.1K |
CADIAN CAPITAL MANAGEMENT, LP services-medical laboratories | 4.60M | 3.71% | 3.71% | $195.75B | May 15, 2025 | ▼ 626.5K |
CITADEL ADVISORS LLC services-medical laboratories | 3.60M | 2.90% | 2.90% | $153.23B | May 15, 2025 | ▲ 2.12M |
EVENTIDE ASSET MANAGEMENT, LLC services-medical laboratories | 3.57M | 2.88% | 2.88% | $151.95B | May 15, 2025 | ▼ 241.2K |
GEODE CAPITAL MANAGEMENT, LLC services-medical laboratories | 2.91M | 2.35% | 2.35% | $123.89B | May 13, 2025 | ▲ 84.5K |
STATE STREET CORP services-medical laboratories | 2.80M | 2.26% | 2.26% | $119.28B | May 15, 2025 | ▼ 49.1K |
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
21
Increased
+8.66M shares3
New Positions
first time holders24
Decreased
−9.49M shares0
Sold Out
fully exitedNet shares change (top 50)
834.2K
+8.66M / −9.49M
Net new holders
+0
3 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
GH insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
42
Buy transactions
84
Sell transactions
0.50
Buy/Sell ratio
$1M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Krognes Steve E. director | Jun 4, 2026 | Sale | 9,294 | $132.51 | $1.23M | 10.2K | Form 4 ↗ |
Joyce Meghan V. director | Jun 3, 2026 | Sale | 3,516 | $126.52 | $444.8K | 17.7K | Form 4 ↗ |
Joyce Meghan V. director | Jun 3, 2026 | Sale | 5,728 | $127.11 | $728.1K | 11.9K | Form 4 ↗ |
Joyce Meghan V. director | Jun 3, 2026 | Sale | 650 | $128.02 | $83.2K | 11.3K | Form 4 ↗ |
Joyce Meghan V. director | Jun 3, 2026 | Sale | 106 | $129.31 | $13.7K | 11.2K | Form 4 ↗ |
Hidalgo Medina Manuel director | May 28, 2026 | Sale | 1,000 | $130.06 | $130.1K | 639 | Form 4 ↗ |
Saia John G. Chief Legal Officer | May 27, 2026 | Sale | 9,994 | $125.08 | $1.25M | 36.0K | Form 4 ↗ |
Saia John G. Chief Legal Officer | May 27, 2026 | Sale | 6 | $126.08 | $756.48 | 36.0K | Form 4 ↗ |
Freeman Chris Chief Commercial Officer | May 22, 2026 | Sale | 24,406 | $118.67 | $2.90M | 60.0K | Form 4 ↗ |
Saia John G. Chief Legal Officer | May 20, 2026 | Sale | 5,632 | $105.34 | $593.3K | 60.3K | 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
Guardant Health, Inc. (GH) is primarily owned by institutional investors, who hold approximately 90.3% of total shares outstanding. Company insiders own approximately 3.61%, while retail and public investors account for the remaining 6.11%.
The largest institutional shareholder of Guardant Health, Inc. is VANGUARD GROUP INC, holding approximately 12.08 million shares — equal to 9.75% of outstanding shares — as of March 31, 2025.
A total of 364 institutional investors currently hold GH stock, with a combined institutional value of approximately $5.10 billion as of the most recent 13F filing period.
Frequently asked questions
GH ownershipGuardant Health, Inc. (GH) is primarily owned by institutional investors, who hold approximately 90.3% of shares. The largest shareholder is VANGUARD GROUP INC with a 9.75% stake. Company insiders hold 3.61%. Data sourced from SEC Form 13F as of March 31, 2025.