ADTN Institutional Ownership
Who owns ADTRAN Holdings, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 251 funds reported holding ADTN at Jun 30, 2026, together owning 105.8% of the company.
- ▲143 buying vs 101 selling
- ▲Held by funds +8.9 pts
- ▲Funds holding +22
- ▲Superinvestors: 3 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 251 | 229 | +9.6% |
| In funds' top 10 | 2 | 5 | −60.0% |
| 13F shares | 86.2M | 79M | +9.2% |
| Held by funds | 105.8% | 96.9% | +8.9 pts |
| New positions | 51 | 44 | +15.9% |
| Increased | 92 | 87 | +5.7% |
| Reduced | 73 | 64 | +14.1% |
| Sold out | 28 | 31 | −9.7% |
| Calls (shares) | 0 | 54K | −100.0% |
| Puts (shares) | 0 | 100 | −100.0% |
| Put/call ratio | – | 0.00 | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ADTN
All superinvestors →
Who owns ADTN
share of fund held shares- Index and passive funds29.3%
- Active managers and hedge funds53.0%
- Banks and brokers16.0%
- Pensions, insurers and other1.7%
The top 10 holders own 42.1% of all ADTN shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
46 funds changed their position- Assenagon Asset Management S.A.Trimmed−1.7M sh
- CenterBook Partners LPNew+1.2M sh
- Counterpoint Mutual Funds LLCTrimmed−478K sh
- HERALD INVESTMENT MANAGEMENT LtdSold out−200K sh
- Y-Intercept (Hong Kong) LtdTrimmed−212K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.62% | 7.8M | $109M | −4,058 |
| 2 | Vanguard Portfolio Management LLC | 6.30% | 5.1M | $71.4M | +364K |
| 3 | Vanguard Capital Management LLC | 4.31% | 3.5M | $48.8M | +84K |
| 4 | State Street Corp | 3.78% | 3.1M | $42.9M | +732K |
| 5 | Royce & Associates LP | 3.65% | 3M | $41.3M | −154K |
| 6 | UBS Group AG | 3.61% | 2.9M | $40.9M | +2.7M |
| 7 | Two Sigma Investments, LP | 3.55% | 2.9M | $40.3M | +1.8M |
| 8 | Millennium Management LLC | 3.34% | 2.7M | $37.8M | +826K |
| 9 | Jpmorgan Chase & Co | 3.22% | 2.6M | $36.1M | +1.1M |
| 10 | DNB Asset Management AS | 3.21% | 2.6M | $36.4M | −504K |
- UBS Group AG+2.7M sh+$37.4M
- Two Sigma Investments, LP+1.8M sh+$24.6M
- Renaissance Technologies LLC+1.6M sh+$21.8M
- Assenagon Asset Management S.A.+1.4M sh+$19.1M
- Qube Research & Technologies Ltd+1.1M sh+$15.7M
- First Eagle Investment Management, LLC+1.1M sh+$15.7M
- Jpmorgan Chase & Co+1.1M sh+$15.2M
- Millennium Management LLC+826K sh+$11.5M
- Shannon River Fund Management LLC−1.2M sh−$15.3M
- SG Americas Securities, LLC−1.1M sh−$15M
- Divisar Capital Management LLC−918K sh−$12.8M
- William Blair Investment Management, LLC−891K sh−$12.4M
- Needham Investment Management LLC−779K sh−$10.8M
- Invesco Ltd.−754K sh−$10.5M
- Sei Investments Co−702K sh−$9.8M
- Paradigm Capital Management Inc/ny−733K sh−$9.2M
ADTN institutional ownership FAQ
Who owns the most ADTN stock?
In Q2 2026 13F filings the largest holder of ADTN was BlackRock, Inc., followed by Vanguard Portfolio Management LLC and Vanguard Capital Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of ADTN is owned by institutions?
Funds that file 13F reports held 105.8% of ADTN's shares at Jun 30, 2026, compared with 96.9% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying ADTN?
In Q2 2026, 143 funds bought ADTN (51 of them new positions) and 101 sold (28 sold out completely). Among well known investors, 3 added and 1 cut. Our fund sentiment for ADTN is strongly bullish.
What is ADTN's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this ADTN ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.