GRI GRI Bio, Inc.

AMX
$2.88

GRI Bio, Inc. (GRI) Institutional Ownership

What the institutions did with GRI 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.

Managers compared
12
filed both this quarter and last
Managers holding
11
+5 on the quarter
Buyers
7
6 opened new
Sellers
3
1 sold out entirely
Buyer share
70.0%
of managers who traded it
Breadth
+40.0
net buyers, as a share of those trading

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Ownership map

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.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
HRT FINANCIAL LP 28.8K 30.8%
VANGUARD CAPITAL MANAGEMENT LLC 21.4K 22.8%
GEODE CAPITAL MANAGEMENT, LLC 13.9K 14.8%
CITADEL ADVISORS LLC 13.4K 14.3%
MORGAN STANLEY 8.7K 9.3%
UBS Group AG 4.9K 5.3%
Tower Research Capital LLC (TRC) 2.4K 2.6%
BARCLAYS PLC 83 0.1%
BlackRock, Inc. 7 0.0%
DANSKE BANK A/S 2 0.0%
Caitong International Asset Management Co., Ltd 2 0.0%

Largest changes

Manager Action Previous Current Change
HRT FINANCIAL LP New 0 28.8K +28.8K
VANGUARD CAPITAL MANAGEMENT LLC New 0 21.4K +21.4K
CITADEL ADVISORS LLC New 0 13.4K +13.4K
MORGAN STANLEY New 0 8.7K +8.7K
GEODE CAPITAL MANAGEMENT, LLC Reduced 18.4K 13.9K -4.6K
UBS Group AG Reduced 8.7K 4.9K -3.8K
Tower Research Capital LLC (TRC) Increased 1.1K 2.4K +1.4K
BARCLAYS PLC New 0 83 +83
SBI Securities Co., Ltd. Sold Out 4 0 -4
Caitong International Asset Management Co., Ltd New 0 2 +2

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.