ATER Institutional Ownership & Shareholders
ATERIAN INC (ATER) is currently held by 23 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $904,908 based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Renaissance Technologies LLC is currently the largest disclosed institutional shareholder of ATER tracked by InsiderSet, reporting ownership valued at approximately $294,400 in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $138,836.175, representing an estimated loss of -52.84% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 94% of the total disclosed ATER value among the investors covered in this analysis. Major shareholders include Renaissance Technologies LLC, Blackrock, Inc., Geode Capital Management, Llc, and several other long-term asset managers with concentrated positions in ATERIAN INC (ATER).
This page ranks the largest institutional ATER shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
23
Total Reported Value
$904,908
Largest Holder
Renaissance Technologies LLC
Largest Position
$294,400
Insider Transactions (90d)
4
Latest Filing Quarter
Q2 2026
New Institutional Positions
35
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | Jim Simons | 0.00% | 223,030 | $294,400 | $138,836 | -$155,564 | -52.84% |
| Blackrock, Inc. | 0.00% | 72,289 | $95,421 | $45,000 | -$50,421 | -52.84% | |
| Geode Capital Management, Llc | 0.00% | 61,128 | $80,713 | $38,052 | -$42,661 | -52.85% | |
| Vanguard Capital Management Llc | 0.00% | 57,047 | $75,302 | $35,512 | -$39,790 | -52.84% | |
| Bridgeway Capital Management, Llc | 0.00% | 52,500 | $69,300 | $32,681 | -$36,619 | -52.84% | |
| Jane Street Group, Llc | 0.00% | 49,348 | $65,140 | $30,719 | -$34,421 | -52.84% | |
| Susquehanna International Group, Llp | 0.00% | 47,818 | $63,120 | $29,767 | -$33,353 | -52.84% | |
| Xtx Topco Ltd | 0.00% | 31,280 | $41,290 | $19,472 | -$21,818 | -52.84% | |
| Vanguard Fiduciary Trust Co | 0.00% | 25,994 | $34,312 | $16,181 | -$18,131 | -52.84% | |
| State Street Corp | 0.00% | 24,007 | $31,689 | $14,944 | -$16,745 | -52.84% | |
| Northern Trust Corp | 0.00% | 13,165 | $17,378 | $8,195 | -$9,183 | -52.84% | |
| Ubs Group Ag | 0.00% | 12,704 | $16,769 | $7,908 | -$8,861 | -52.84% | |
| Simplex Trading, Llc | 0.00% | 6,172 | $8,147 | $3,842 | -$4,305 | -52.84% | |
| Tower Research Capital Llc (Trc) | 0.00% | 3,795 | $5,009 | $2,362 | -$2,647 | -52.84% | |
| Jpmorgan Chase & Co | 0.00% | 2,784 | $3,731 | $1,733 | -$1,998 | -53.55% | |
| Vanguard Global Advisers, Llc | 0.00% | 1,574 | $2,078 | $980 | -$1,098 | -52.85% | |
| Osaic Holdings, Inc. | 0.00% | 581 | $765 | $362 | -$403 | -52.72% | |
| Sbi Securities Co., Ltd. | 0.00% | 316 | $185 | $197 | +$12 | +6.33% | |
| Bnp Paribas Financial Markets | 0.00% | 73 | $96 | $45 | -$51 | -52.66% | |
| Stance Capital Llc | 0.00% | 36 | $48 | $22 | -$26 | -53.31% | |
| Proathlete Wealth Management Llc | 0.00% | 21 | $12 | $13 | +$1 | +8.94% | |
| Morgan Stanley | 0.00% | 1 | $2 | $1 | -$1 | -68.88% | |
| National Bank Of Canada | 0.00% | 1 | $1 | $1 | -$0 | -37.75% |
Frequently asked questions about ATER
Who are the largest institutional holders of ATER?
The largest institutional holders of ATER reported in the latest SEC Form 13F filings include Renaissance Technologies LLC, Blackrock, Inc., Geode Capital Management, Llc, Vanguard Capital Management Llc, and Bridgeway Capital Management, Llc. InsiderSet ranks institutional holders by their latest reported ATER position.
What is ATER institutional ownership?
This page tracks ATER positions reported by institutional investment managers through SEC Form 13F. ATERIAN INC (ATER) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ATER?
InsiderSet currently tracks 23 institutional managers reporting ATER holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of ATER shareholders.
How much ATER stock do institutions own?
Institutional investment managers disclosed approximately $904,908 in ATER holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ATER institutional ownership last updated?
The latest ATER institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional ATER holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its ATER position after the reporting date.
Are institutions buying or selling ATER?
Institutional buying and selling can be analyzed by comparing ATER positions across consecutive 13F reporting periods. InsiderSet's ATER Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ATER ownership changes.
How has ATER institutional ownership changed over time?
InsiderSet tracks ATER institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.