XLO
Xilio Therapeutics, Inc.Company with tickers: XLO
CIK
1840233
CUSIP
98422T100
Shares Outstanding
6,575,139
13F Activity (30d)
3 filings
2 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 1
Total Value: $5,469,771
Total Shares: 650,389
Institutional Ownership Trend
Holder Concentration
Across 1 13F filers · Δ vs Dec 31, 2025Top Holder
100.0%
+77.1 pts
Top 5
100.0%
+28.2 pts
Top 10
100.0%
+10.4 pts
HHI
10,000
Highly concentrated
+8,699
Quarterly Activity
vs Dec 31, 2025
New
0
Increased
0
Decreased
1
Sold Out
36
Unchanged
0
Holder count:
-36
Institutional value:
-98.5%
Shares held:
-98.4%
Top Buyers
vs Dec 31, 2025No qualifying movers this quarter.
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid GILEAD SCIENCES, INC. | −8,455,062 | 650,389 |
Top New Positions
vs Dec 31, 2025No new positions this quarter.
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mid Bain Capital Life Sciences Investors, LLC | 7,372,686 | $66,059,266 | |
| Mid Frazier Life Sciences Management, L.P. | 5,915,091 | $52,999,215 | |
| Large Point72 Asset Management, L.P. | 4,000,000 | $35,840,000 | |
| Small Sio Capital Management, LLC | 2,134,537 | $19,125,451 | |
| Small STEMPOINT CAPITAL LP | 2,030,028 | $18,189,050 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mid GILEAD SCIENCES, INC. | $5,469,771 | 100.00% | 650,389 | Shares | Sole | 2026-05-08 | ||||
| No holders match your search. | ||||||||||