GRI
GRI Bio, Inc.Company with tickers: GRI
CIK
1824293
CUSIP
3622AW502
Shares Outstanding
1,770,838
13F Activity (30d)
5 filings
5 filers
Holders: 6
Total Value: $64,651
Total Shares: 28,233
Institutional Ownership Trend
Holder Concentration
Across 6 13F filers · Δ vs Dec 31, 2025Top Holder
65.3%
−34.7 pts
Top 5
100.0%
−0.0 pts
Top 10
100.0%
0.0 pts
HHI
5,234
Highly concentrated
−4,766
Quarterly Activity
vs Dec 31, 2025
New
5
Increased
0
Decreased
1
Sold Out
0
Unchanged
0
Holder count:
+5
Institutional value:
+7891.5%
Shares held:
+24030.8%
Top Buyers
vs Dec 31, 2025No qualifying movers this quarter.
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid SBI Securities Co., Ltd. | −113 | 4 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | 18,438 | $42,222 | |
| Mega UBS Group AG | 8,722 | $19,973 | |
| Mid Tower Research Capital LLC (TRC) | 1,060 | $2,427 | |
| Mega BlackRock, Inc. | 7 | $16 | |
| Large DANSKE BANK A/S | 2 | $4 |
Top Sold-Out Positions
vs Dec 31, 2025No fully closed positions this quarter.
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | $42,222 | 65.31% | 18,438 | Shares | Defined | 2026-05-15 | ||||
| Mega UBS Group AG | $19,973 | 30.89% | 8,722 | Shares | Defined | 2026-05-05 | ||||
| Mid Tower Research Capital LLC (TRC) | $2,427 | 3.75% | 1,060 | Shares | Defined | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $16 | 0.02% | 7 | Shares | Sole | 2026-05-13 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $9 | 0.01% | 4 | Shares | Defined | 2026-04-28 | ||||
| Large DANSKE BANK A/S Bank | $4 | 0.01% | 2 | Shares | Sole | 2026-05-12 | ||||
| No holders match your search. | ||||||||||