XBIO
Xenetic Biosciences, Inc.Company with tickers: XBIO
CIK
1534525
CUSIP
984015602
Shares Outstanding
2,291,056
13F Activity (30d)
7 filings
6 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: 6
Total Value: $453,240
Total Shares: 169,120
Institutional Ownership Trend
Holder Concentration
Across 6 13F filers · Δ vs Dec 31, 2025Top Holder
81.3%
+3.2 pts
Top 5
100.0%
+1.7 pts
Top 10
100.0%
+0.0 pts
HHI
6,784
Highly concentrated
+578
Quarterly Activity
vs Dec 31, 2025
New
1
Increased
1
Decreased
2
Sold Out
6
Unchanged
2
Holder count:
-5
Institutional value:
-8.7%
Shares held:
-26.1%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | +7,860 | 21,441 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Large RENAISSANCE TECHNOLOGIES LLC | −41,069 | 137,440 | |
| Mid Tower Research Capital LLC (TRC) | −3,206 | 806 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 6,731 | $18,039 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | 14,879 | $32,287 | |
| Mid DRW Securities, LLC | 13,824 | $29,998 | |
| Mega CITIGROUP INC | 1,241 | $2,692 | |
| Micro Alexis Investment Partners, LLC | 25 | $54 | |
| Mega BANK OF AMERICA CORP /DE/ | 18 | $38 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Large RENAISSANCE TECHNOLOGIES LLC | $368,339 | 81.27% | 137,440 | Shares | Sole | 2026-05-14 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $57,461 | 12.68% | 21,441 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $18,039 | 3.98% | 6,731 | Shares | Defined | 2026-05-15 | ||||
| Mid JTC Employer Solutions Trustee Ltd | $7,236 | 1.60% | 2,700 | Shares | Sole | 2026-05-19 | ||||
| Mid Tower Research Capital LLC (TRC) | $2,160 | 0.48% | 806 | Shares | Defined | 2026-05-15 | ||||
| Small Darwin Wealth Management, LLC | $5 | 0.00% | 2 | Shares | Sole | 2026-05-01 | ||||
| No holders match your search. | ||||||||||