ATER Aterian, Inc.
Aterian, Inc. (ATER) Institutional Ownership
What the institutions did with ATER last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 223.0K | 32.5% |
| BlackRock, Inc. | 72.3K | 10.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 61.1K | 8.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 57.0K | 8.3% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 52.5K | 7.7% |
| JANE STREET GROUP, LLC | 49.3K | 7.2% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 47.8K | 7.0% |
| XTX Topco Ltd | 31.3K | 4.6% |
| VANGUARD FIDUCIARY TRUST CO | 26.0K | 3.8% |
| STATE STREET CORP | 24.0K | 3.5% |
| NORTHERN TRUST CORP | 13.2K | 1.9% |
| UBS Group AG | 12.7K | 1.9% |
| SIMPLEX TRADING, LLC | 6.2K | 0.9% |
| Tower Research Capital LLC (TRC) | 3.8K | 0.6% |
| JPMORGAN CHASE & CO | 2.8K | 0.4% |
| Vanguard Global Advisers, LLC | 1.6K | 0.2% |
| OSAIC HOLDINGS, INC. | 581 | 0.1% |
| SBI Securities Co., Ltd. | 311 | 0.0% |
| BNP PARIBAS FINANCIAL MARKETS | 73 | 0.0% |
| STANCE CAPITAL LLC | 36 | 0.0% |
| PROATHLETE WEALTH MANAGEMENT LLC | 21 | 0.0% |
| MORGAN STANLEY | 1 | 0.0% |
| NATIONAL BANK OF CANADA /FI/ | 1 | 0.0% |
| TD Waterhouse Canada Inc. | 1 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | Increased | 48.6K | 223.0K | +174.4K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 133.9K | 61.1K | -72.7K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | New | 0 | 52.5K | +52.5K |
| XTX Topco Ltd | Reduced | 57.9K | 31.3K | -26.6K |
| JANE STREET GROUP, LLC | Increased | 32.2K | 49.3K | +17.2K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 37.0K | 47.8K | +10.8K |
| Virtu Financial LLC | Sold Out | 10.6K | 0 | -10.6K |
| UBS Group AG | Increased | 5.5K | 12.7K | +7.2K |
| SIMPLEX TRADING, LLC | New | 0 | 6.2K | +6.2K |
| ROYAL BANK OF CANADA | Sold Out | 5.4K | 0 | -5.4K |
| Tower Research Capital LLC (TRC) | Increased | 1.5K | 3.8K | +2.3K |
| NORTHERN TRUST CORP | Increased | 10.9K | 13.2K | +2.3K |
| Apollo Management Holdings, L.P. | Sold Out | 2.3K | 0 | -2.3K |
| OSAIC HOLDINGS, INC. | Increased | 231 | 581 | +350 |
| IFP Advisors, Inc | Sold Out | 11 | 0 | -11 |
| SBI Securities Co., Ltd. | Reduced | 315 | 311 | -4 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.