$ATER

$0.70 +$0.04 (5.71%) Live

$ATER Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 18.0M shares outstanding

Who owns ATER?

By type of holder

Institutions 3.6% Insiders 63.3% Everyone else 33.1%

Concentration Top 10 holders own 352.7%

Michelle Chiam Sin Ling 145.4% · Chang Woei Jiann 145.4%

Institutional ownership

3.6%

+0.6 pts vs last qtr

Institutional holders

-3 vs last qtr

Net shares bought

+107.7K

by institutions in Q2 2026

New / sold out

2 / 5

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Renaissance Technologies LLC +174.4K
Bridgeway Capital Management, LLC NEW +52.5K

Biggest sellers in Q2 2026

Geode Capital Management, LLC −72.7K
Susquehanna International Group, LLP SOLD OUT −37.0K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Aterian Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2021–FY2022

+88.0%

+88.05% a year

Each share's claim on the business

−46.8%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $43.6M

over 2 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years83% Under 1 year17%

Quarterly turnover

39.3%

of institutional shares changed hands

Top 10 managers, median time held

2.3 years

Super Investors

Investment managers reporting ATER on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
RT Renaissance Technologies LLC	223.0K	1.24%	+174.4K (+358.5%)	2025	0.0%
Shares held by quarter Peak holding223.0K (Q2'26) Change over 8 quarters+199.5K Share of the company1.240% Renaissance Technologies LLC's full portfolio →
GC Geode Capital Management, LLC	61.1K	0.34%	−72.7K (−54.3%)	2024	0.0%
Shares held by quarter Peak holding133.9K (Q1'26) Change over 8 quarters+2.0K Share of the company0.340% Geode Capital Management, LLC's full portfolio →

Renaissance Technologies LLC

223.0K

% of company

1.24%

Change vs last qtr

+174.4K (+358.5%)

Held since

2025

Geode Capital Management, LLC

61.1K

% of company

0.34%

Change vs last qtr

−72.7K (−54.3%)

Held since

2024

26 more super investors behind a free account

See every manager holding Aterian Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ATER on Form N-PORT; together they hold 0.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$75.3K	57.0K	0.32%	0.00%	June 30, 2026
FE Fidelity Extended Market Index Fund Fidelity Concord Street Trust	$15.9K	39.7K	0.22%	0.00%	August 31, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$75.3K

% of company

0.32%

% of the fund

0.00%

As of

June 30, 2026

Fidelity Extended Market Index Fund

Fidelity Concord Street Trust

Position value

$15.9K

% of company

0.22%

% of the fund

0.00%

As of

August 31, 2026

3 more funds behind a free account

See every fund holding Aterian Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
MC Michelle Chiam Sin Ling 5%+ holder 13D · 10.0%	26.1M	145.38%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company145.380% Disclosed stake13D · 10.0% View the 13D/G filing →
CW Chang Woei Jiann 5%+ holder 13D · 10.0%	26.1M	145.38%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company145.380% Disclosed stake13D · 10.0% View the 13D/G filing →

Michelle Chiam Sin Ling

5%+ holder13D · 10.0%

26.1M

% of company

145.38%

Change vs last qtr

—

Held since

—

Chang Woei Jiann

5%+ holder13D · 10.0%

26.1M

% of company

145.38%

Change vs last qtr

—

Held since

—

10 more holders behind a free account

See every insider and 5%+ holder of Aterian Inc.

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