ADTRAN Holdings, Inc.
ADTN • NASDAQ
ADTRAN Holdings, Inc. is a communication equipment company in the technology sector on NASDAQ, led by Thomas R. Stanton, with a market cap of $665.8M. As of Q3 2025, 84% of shares are held by 218 institutional investors, with VANGUARD GROUP INC as the largest holder at 10.47%.
Chief Executive OfficerThomas R. Stanton
Market Cap$665.8M
Communication Equipment
Technology
Employees3.2K
Websiteadtran.com
Country
United States of America
Overview
Overview of institutional ownership in ADTN as of Q3 2025 with a market cap of $750.9M
All Institutions
- Institutions
- 218
- Value Held
- $632.1M
- Shares Held
- 67.4M
- Avg Position
- $2.9M
- Median Position
- $457.5K
Hedge Funds
- Hedge Funds
- 49
- Value Held
- $137.7M
- Shares Held
- 14.7M
- Avg Position
- $2.8M
- Median Position
- $703.5K
Ownership Breakdown
Based on market cap of $750.9M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in ADTN as of Q3 2025
| Institution | Position Value |
|---|---|
 VANGUARD GROUP INC Institution | $78.6M 0.00% of portfolio |
B BlackRock, Inc. Institution | $77.6M 0.00% of portfolio |
D Divisar Capital Management LLC Hedge Fund•Long/Short | $30.1M 8.20% of portfolio |
D DnB Asset Management AS Institution | $27.2M 0.10% of portfolio |
 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Long Only Manager | $25.7M 0.07% of portfolio |
R ROYCE & ASSOCIATES LLC Institution | $22.6M 0.23% of portfolio |
 STATE STREET CORP Institution | $17.8M 0.00% of portfolio |
 GEODE CAPITAL MANAGEMENT LLC ETF Provider | $16.6M 0.00% of portfolio |
 CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $11.4M 0.01% of portfolio |
F First Eagle Investment Management, LLC Long Only Manager | $11.3M 0.02% of portfolio |
Net Capital Flow
Institutional buying and selling activity for ADTN in Q3 2025
- Traded
- +$79.6M
- Buyers
- 128
- Sellers
- 74
- Total Bought
- +$128.0M
- Total Sold
- −$48.4M
- Avg Position
- $2.7M
Biggest Buyers
| Institution | Net Bought |
|---|---|
O Ophir Asset Management Pty Ltd Long Only Manager | +$11.3M +1.2M shares |
A Alyeska Investment Group, L.P. Hedge Fund•Multi-Strategy | +$10.2M +1.1M shares |
A Assenagon Asset Management S.A. Institution | +$7.6M +814.9K shares |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | +$7.6M +813.8K shares |
 Schonfeld Strategic Advisors LLC Hedge Fund•Multi-Strategy | +$7.3M +773.5K shares |
 TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy | +$6.8M +729.2K shares |
J JANE STREET GROUP, LLC Institution | +$4.1M +441.4K shares |
H HRT FINANCIAL LLC Institution | +$3.7M +393.3K shares |
 Trexquant Investment LP Hedge Fund•Quant | +$3.7M +391.1K shares |
 GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager | +$3.6M +382.2K shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
D Divisar Capital Management LLC Hedge Fund•Long/Short | −$9.5M −1.0M shares |
 SG Capital Management LLC Hedge Fund•Event Driven | −$7.6M −847.4K shares |
 Marshall Wace LLP Institution | −$4.3M −458.5K shares |
Q Qube Research & Technologies Ltd Institution | −$3.8M −402.4K shares |
 RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | −$3.7M −397.2K shares |
 Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy | −$2.1M −239.0K shares |
 BANK OF AMERICA CORP /DE/ Institution | −$2.0M −216.1K shares |
 LAZARD ASSET MANAGEMENT LLC Long Only Manager | −$1.6M −176.3K shares |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Long Only Manager | −$1.6M −166.1K shares |
 MORGAN STANLEY RIA/Wealth | −$1.4M −150.5K shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited ADTN in Q3 2025
- New Positions
- 16
- New Value
- $18.8M
- Exited Positions
- 17
- Exited Value
- $14.4M
New Positions
| Institution | Position Value |
|---|---|
O Ophir Asset Management Pty Ltd Long Only Manager | $11.3M 1.2M shares |
 WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy | $2.4M 260.4K shares |
M MOORE CAPITAL MANAGEMENT, LP Hedge Fund•Global Macro | $1.6M 174.3K shares |
 SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC Hedge Fund•Long/Short | $703.5K 75.0K shares |
 Toroso Investments, LLC ETF Provider | $597.1K 63.7K shares |
E EntryPoint Capital, LLC Hedge Fund•Long/Short | $515.4K 54.9K shares |
S Sender Co & Partners, Inc. Institution | $405.1K 43.2K shares |
 Virtus ETF Advisers LLC Long Only Manager | $296.1K 31.6K shares |
B Bridgefront Capital, LLC Hedge Fund•Quant | $236.7K 25.2K shares |
P PharVision Advisers, LLC Hedge Fund•Long/Short | $221.4K 23.6K shares |
Exited Positions
| Institution | Previous Position |
|---|---|
SG Capital Management LLC Hedge Fund•Event Driven | $7.6M 847.4K shares |
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy | $2.1M 239.0K shares |
LAZARD ASSET MANAGEMENT LLC Long Only Manager | $1.6M 176.3K shares |
H | $1.0M 115.8K shares |
 JACOBS LEVY EQUITY MANAGEMENT, INC Hedge Fund•Quant | $655.7K 73.1K shares |
 Gotham Asset Management, LLC Hedge Fund•Long/Short | $466.6K 52.0K shares |
 ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant | $274.3K 30.6K shares |
 Magnetar Financial LLC Hedge Fund•Multi-Strategy | $234.4K 26.1K shares |
 Kestra Advisory Services, LLC RIA/Wealth | $114.0K 12.7K shares |
P Petrus Trust Company, LTA Institution | $106.3K 11.9K shares |
Options Activity
Institutions with the largest Call and Put options positions in ADTN as of Q3 2025
- Call Positions
- 8
- Call Value
- $3.7M
- Put Positions
- 4
- Put Value
- $1.4M
Call Positions
| Institution | Position Value |
|---|---|
J JANE STREET GROUP, LLC Institution | $941.8K 1.0K contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $845.1K 901.0 contracts |
S SYMMETRY PEAK MANAGEMENT LLC Institution | $641.6K 684.0 contracts |
S Shay Capital LLC Institution | $600.3K 640.0 contracts |
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $513.1K 547.0 contracts |
W WOLVERINE TRADING, LLC Institution | $174.4K 189.0 contracts |
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy | - - contracts |
 Walleye Trading LLC RIA/Wealth | - - contracts |
Put Positions
| Institution | Position Value |
|---|---|
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $689.4K 735.0 contracts |
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $681.9K 727.0 contracts |
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy | - - contracts |
Walleye Trading LLC RIA/Wealth | - - contracts |
Most Committed Institutions
Institutions with ADTN as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
D Divisar Capital Management LLC Hedge Fund•Long/Short | 8.20% $30.1M |
 Worth Venture Partners, LLC Fund of Funds | 6.68% $1.4M |
T Tieton Capital Management, LLC Long Only Manager | 3.22% $9.3M |
 WESTERLY CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short | 2.74% $8.6M |
 1492 Capital Management LLC Long Only Manager | 2.16% $5.4M |
 Nierenberg Investment Management Company, Inc. Hedge Fund•Value | 1.78% $3.2M |
O Ophir Asset Management Pty Ltd Long Only Manager | 1.40% $11.3M |
 NEEDHAM INVESTMENT MANAGEMENT LLC Hedge Fund•Long/Short | 0.77% $11.0M |
 Kovack Advisors, Inc. RIA/Wealth | 0.63% $6.6M |
 WHITE PINE CAPITAL LLC RIA/Wealth | 0.62% $2.2M |
Hedge Fund Spotlight
Discover hedge funds investing in ADTN
P
Polymer Capital Management LLC
Hedge Fund • Multi-Strategy
Portfolio ManagerEric Jay Kemnitz
- Portfolio Value
- $755.2M
- Positions
- 704
- Last Reported
- Q3 2025
Sector Allocation
Position in ADTRAN Holdings, Inc.
- Market Value
- $345.6K
- Shares Held
- 36.8K
- Portfolio Weight
- 0.05%
- Owned Since
- 2025-Q1
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Communication Equipment Technology | $19.6M | 2.59% | |
Semiconductors Technology | $18.8M | 2.49% | |
Auto - Manufacturers Consumer Cyclical | $17.6M | 2.33% |
