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$AVTR
$17.29 +$0.00 (0.0%) Close

Ownership

13F as of Q2 2026 · 676.4M shares outstanding

Who owns AVTR?

By type of holder
Institutions 100.0% Insiders 0.0% Everyone else 0.0%
Concentration Top 10 holders own 55.1%
Dodge & Cox 17.8% · BlackRock, Inc. 10.4%
Institutional ownership
100.0%
+0.1 pts vs last qtr
Institutional holders
456
+23 vs last qtr
Net shares bought
+23.2M
by institutions in Q2 2026
New / sold out
98 / 75
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • Marshall Wace, LLP +9.7M
  • Vaughan Nelson Investment Management, L.P. NEW +7.4M

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Biggest sellers in Q2 2026
  • Wellington Management Group LLP SOLD OUT −24.2M
  • T. Rowe Price Investment Management, Inc. SOLD OUT −14.8M

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Who is planning to sell?

Notices of proposed sale, last 12 months
$733K
1 notice from 1 person
Shares covered
29.1K
0.00% of the company
Arranged in advance
0%
of the value is under a 10b5-1 plan
Under a 10b5-1 plan No plan
$0$366.5K$732.9KNov 2025: $732.9K without a planNovDecJanFebMarAprMayJunJulAugSepOct
Largest proposed sellers
  • Todd Edwards Officer $733K
Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2018–FY2025
+412.9%
+26.31% a year
Each share's claim on the business
−80.5%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
$75.1M vs $361M
over 8 fiscal years
Diluted shares, split-adjusted
128.7M408.7M688.7M2018: 132.7M shares'182019: 401.2M shares'192020: 583.4M shares'202021: 599.6M shares'212022: 679.4M shares'222023: 678.4M shares'232024: 681.9M shares'242025: 680.6M shares'25
Buybacks Stock-based comp
$0$37.6M$75.1M2018 buybacks: $02018 stock comp: $18.4M'182019 buybacks: $02019 stock comp: $67.9M'192020 buybacks: $02020 stock comp: $44.1M'202021 buybacks: $02021 stock comp: $50.7M'212022 buybacks: $02022 stock comp: $45.8M'222023 buybacks: $02023 stock comp: $40.5M'232024 buybacks: $02024 stock comp: $46.8M'242025 buybacks: $75.1M2025 stock comp: $46.4M'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years47% 3–5 years6% 1–3 years29% Under 1 year18%
Quarterly turnover
13.8%
of institutional shares changed hands
Top 10 managers, median time held
5 years

Super Investors

Investment managers reporting AVTR on Form 13F
DC
Dodge & Cox
Shares
120.0M
% of company
17.75%
Change vs last qtr
+372.6K (+0.3%)
Held since
2023
B
BlackRock, Inc.
Shares
70.3M
% of company
10.39%
Change vs last qtr
+4.6M (+7.0%)
Held since
≤2021

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Institutional Funds

Mutual funds and ETFs reporting AVTR on Form N-PORT; together they hold 54.6% of the company
DC
Dodge & Cox Stock Fund
Dodge & Cox Funds
Position value
$741M
% of company
11.07%
% of the fund
0.63%
As of
June 30, 2026
IC
iShares Core S&P Mid-Cap ETF
iShares Trust
Position value
$231M
% of company
3.46%
% of the fund
0.19%
As of
June 30, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
SM
Stubblefield Michael
Insider
Shares
1.9M
% of company
0.28%
Change vs last qtr
—
Held since
—
LE
Ligner Emmanuel
Insider
Shares
737.3K
% of company
0.11%
Change vs last qtr
—
Held since
—

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