Aterian, Inc.
Aterian, Inc. (ATER) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ATER · as of Sep 30, 2025
Ownership Breakdown
32
Institutional Holders
▲ 2 vs Q2
$610,718
Total Inst. Value
▼ $458,092 vs Q2
10.82M
Shares Outstanding
freeFloat 75.83%
582,696
13F Shares Held
▼ 62,234 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ATER largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC electric housewares & fans | 175.7K | 2.29% | 2.29% | $184.45M | Nov 7, 2025 | ▼ 108.3K |
BLACKROCK, INC. electric housewares & fans | 72.3K | 94.19% | 94.19% | $75.90M | Nov 12, 2025 | — held |
GEODE CAPITAL MANAGEMENT, LLC electric housewares & fans | 59.1K | 77.02% | 77.02% | $62.08M | Nov 12, 2025 | — held |
SUSQUEHANNA INTERNATIONAL GROUP, LLP electric housewares & fans | 40.5K | 52.78% | 52.78% | $42.54M | Nov 14, 2025 | ▲ 19.7K |
CITADEL ADVISORS LLC electric housewares & fans | 33.2K | 43.21% | 43.21% | $34.82M | Nov 14, 2025 | ▲ 33.2K |
RENAISSANCE TECHNOLOGIES LLC electric housewares & fans | 31.5K | 41.10% | 41.10% | $33.12M | Nov 13, 2025 | ▲ 14.2K |
XTX TOPCO LTD electric housewares & fans | 24.9K | 32.49% | 32.49% | $26.18M | Nov 14, 2025 | ▼ 8.2K |
STATE STREET CORP electric housewares & fans | 24.0K | 31.28% | 31.28% | $25.21M | Nov 14, 2025 | — held |
JANE STREET GROUP, LLC electric housewares & fans | 22.5K | 29.29% | 29.29% | $23.61M | Nov 14, 2025 | NEW |
GSA CAPITAL PARTNERS LLP electric housewares & fans | 19.4K | 25.26% | 25.26% | $20.00M | Nov 7, 2025 | ▼ 3.7K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
8
Increased
+99.7K shares5
New Positions
first time holders7
Decreased
−138.0K shares7
Sold Out
fully exitedNet shares change (top 50)
38.3K
+99.7K / −138.0K
Net new holders
-1
5 new / 7 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ATER insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
2
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Rodriguez Arturo Chief Executive Officer | May 21, 2026 | Award | 70,000 | — | — | 1.08M | Form 4 ↗ |
Lazar David E. director | Apr 27, 2026 | Award | 1,750,000 | — | — | 1.75M | Form 4 ↗ |
KURTZ WILLIAM director | Jan 23, 2026 | Award | 40,394 | — | — | 155.9K | Form 4 ↗ |
Feldman Joshua O Chief Financial Officer | Jan 23, 2026 | Award | 120,000 | — | — | 497.4K | Form 4 ↗ |
Rodriguez Arturo Chief Executive Officer | Jan 23, 2026 | Award | 50,000 | — | — | 1.01M | Form 4 ↗ |
Lattmann Susan E. director | Jan 23, 2026 | Award | 25,555 | — | — | 162.5K | Form 4 ↗ |
Harlam Bari A director | Jan 23, 2026 | Award | 24,731 | — | — | 162.0K | Form 4 ↗ |
KURTZ WILLIAM director | Aug 13, 2025 | Award | 78,034 | — | — | 115.5K | Form 4 ↗ |
Harlam Bari A director | Aug 13, 2025 | Award | 78,034 | — | — | 137.3K | Form 4 ↗ |
Lattmann Susan E. director | Aug 13, 2025 | Award | 78,034 | — | — | 136.9K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Aterian, Inc. (ATER) is primarily owned by institutional investors, who hold approximately 5.4% of total shares outstanding. Company insiders own approximately 24.17%, while retail and public investors account for the remaining 70.44%.
The largest institutional shareholder of Aterian, Inc. is VANGUARD GROUP INC, holding approximately 175,669 shares — equal to 2.29% of outstanding shares — as of September 30, 2025.
A total of 32 institutional investors currently hold ATER stock, with a combined institutional value of approximately $610,718 as of the most recent 13F filing period.
Frequently asked questions
ATER ownershipAterian, Inc. (ATER) is primarily owned by institutional investors, who hold approximately 5.4% of shares. The largest shareholder is VANGUARD GROUP INC with a 2.29% stake. Company insiders hold 24.17%. Data sourced from SEC Form 13F as of September 30, 2025.