Avantor, Inc.
Avantor, Inc. (AVTR) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AVTR · as of Sep 30, 2024
Ownership Breakdown
557
Institutional Holders
▲ 16 vs Q2
$17.69B
Total Inst. Value
▲ $3.91B vs Q2
682.76M
Shares Outstanding
freeFloat 96.94%
685.00M
13F Shares Held
▲ 34.84M vs Q2
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
AVTR largest shareholders · institutional ownership
Q3 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. laboratory analytical instruments | 72.89M | 10.71% | 10.71% | $1.89T | Nov 13, 2024 | NEW |
DODGE & COX laboratory analytical instruments | 68.42M | 10.06% | 10.06% | $1.77T | Nov 13, 2024 | ▲ 3.05M |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. laboratory analytical instruments | 67.10M | 9.86% | 9.86% | $1.74T | Nov 14, 2024 | ▼ 2.57M |
VANGUARD GROUP INC laboratory analytical instruments | 62.76M | 9.23% | 9.23% | $1.62T | Nov 13, 2024 | ▼ 1.49M |
STATE STREET CORP laboratory analytical instruments | 22.37M | 3.29% | 3.29% | $578.67B | Nov 14, 2024 | ▲ 8.21M |
BARROW HANLEY MEWHINNEY & STRAUSS LLC laboratory analytical instruments | 21.59M | 3.17% | 3.17% | $558.56B | Nov 13, 2024 | ▼ 689.7K |
CANADA PENSION PLAN INVESTMENT BOARD laboratory analytical instruments | 20.92M | 3.08% | 3.08% | $541.32B | Nov 14, 2024 | ▼ 2.00M |
BOSTON PARTNERS laboratory analytical instruments | 19.13M | 2.81% | 2.81% | $494.27B | Nov 12, 2024 | ▼ 104.6K |
JANUS HENDERSON GROUP PLC laboratory analytical instruments | 17.69M | 2.60% | 2.60% | $457.71B | Nov 14, 2024 | ▲ 2.72M |
NEW MOUNTAIN CAPITAL, L.L.C. laboratory analytical instruments | 14.00M | 2.06% | 2.06% | $362.18B | Nov 14, 2024 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2024 vs prior quarter
Q3 2024
23
Increased
+41.12M shares2
New Positions
first time holders22
Decreased
−15.52M shares0
Sold Out
fully exitedNet shares change (top 50)
+25.59M
+41.12M / −15.52M
Net new holders
+3
2 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
AVTR 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.
20
Buy transactions
13
Sell transactions
1.54
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 |
|---|---|---|---|---|---|---|---|
Murthy Mala director | May 7, 2026 | Award | 25,270 | — | — | 69.5K | Form 4 ↗ |
LUCIER GREGORY T director | May 8, 2026 | Purchase | 10,000 | $8.32 | $83.2K | 60.0K | Form 4 ↗ |
LUCIER GREGORY T director | May 7, 2026 | Award | 25,270 | — | — | 34.0K | Form 4 ↗ |
Dingemans Simon director | May 7, 2026 | Award | 25,270 | — | — | 31.5K | Form 4 ↗ |
Makin Louise director | May 7, 2026 | Award | 25,270 | — | — | 47.1K | Form 4 ↗ |
Massaro Joseph R director | May 7, 2026 | Award | 25,270 | — | — | 77.4K | Form 4 ↗ |
MEHRA SANJEEV K director | May 7, 2026 | Award | 25,270 | — | — | 33.4K | Form 4 ↗ |
SEVERINO MICHAEL director | May 7, 2026 | Award | 25,270 | — | — | 85.8K | Form 4 ↗ |
SUMME GREGORY L director | May 7, 2026 | Award | 25,270 | — | — | 83.4K | Form 4 ↗ |
Dingemans Simon director | May 1, 2026 | Purchase | 25,000 | $8.14 | $203.5K | 25.0K | 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
Avantor, Inc. (AVTR) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 3.06%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Avantor, Inc. is BLACKROCK, INC., holding approximately 72.89 million shares — equal to 10.71% of outstanding shares — as of September 30, 2024.
A total of 557 institutional investors currently hold AVTR stock, with a combined institutional value of approximately $17.69 billion as of the most recent 13F filing period.
Frequently asked questions
AVTR ownershipAvantor, Inc. (AVTR) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is BLACKROCK, INC. with a 10.71% stake. Company insiders hold 3.06%. Data sourced from SEC Form 13F as of September 30, 2024.