RENAISSANCE TECHNOLOGIES LLC XBIO — XENETIC BIOSCIENCES INC

Ownership history in RENAISSANCE TECHNOLOGIES LLC  ·  30 quarters on record

AI Ownership Summary

RENAISSANCE TECHNOLOGIES LLC reported XENETIC BIOSCIENCES INC (XBIO) in 30 quarterly 13F filings from 2024 Q3 through 2026 Q2. The latest visible filing shows XBIO at 0.00% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this XBIO ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was RENAISSANCE TECHNOLOGIES LLC's position in XENETIC BIOSCIENCES INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q2

XBIO was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2025 Q4

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q3 to 2026 Q2

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

XBIO stock page RENAISSANCE TECHNOLOGIES LLC fund profile RENAISSANCE TECHNOLOGIES LLC full holdings
How RENAISSANCE TECHNOLOGIES LLC held XBIO — position size vs. price
% of Fund (quarterly)    XBIO price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 8 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 REDUCED — — — 117,440 -20,000 -14.6% 0.00% $342K 2026-08-13 $3.29
2026 Q1 REDUCED 23.0% +6.3% ❌ 137,440 -41,069 -23.0% 0.00% $368K 2026-05-14 $3.11
2025 Q4 ADDED — — — 178,509 +149,559 +516.6% 0.00% $387K 2026-02-12 $2.39
2025 Q3 ADDED — — — 28,950 +4,200 +17.0% 0.00% $91K 2025-11-14 (Est.) $2.60
2025 Q2 REDUCED 7.5% -17.4% ✅ 24,750 -2,014 -7.5% 0.00% $97K 2025-08-13 $2.99
2025 Q1 ADDED — — — 26,764 +1,214 +4.8% 0.00% $70K 2025-05-14 $3.12
2024 Q4 ADDED — — — 25,550 +9,700 +61.2% 0.00% $102K 2025-02-13 $4.20
2024 Q3 REDUCED 38.5% -6.2% ✅ 15,850 -9,932 -38.5% 0.00% $68K 2024-11-13 $3.65
22 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding XBIO

As of 2026 Q2 — sorted by position size

JTC Employer Solutions Trustee Ltd 3Y 0.0% SBI Securities Co., Ltd. 0.0% Tower Research Capital LLC (TRC) 3Y 7Y 0.0% GEODE CAPITAL MANAGEMENT, LLC 3Y 7Y 0.0% Darwin Wealth Management, LLC 3Y 7Y 0.0% VANGUARD CAPITAL MANAGEMENT LLC 0.0% MORGAN STANLEY 3Y 7Y 0.0%

FAQ About RENAISSANCE TECHNOLOGIES LLC and XBIO

These are the practical questions this page is built to answer before you even open the full history table.

How long has RENAISSANCE TECHNOLOGIES LLC reported owning XBIO?

RENAISSANCE TECHNOLOGIES LLC reported XBIO across 8 quarterly 13F filings, from 2024 Q3 through 2026 Q2.

What was the largest reported XBIO position in RENAISSANCE TECHNOLOGIES LLC's portfolio?

The largest reported portfolio weight for XBIO was 0.00% in 2025 Q4.

What is the latest reported XBIO position on this page?

The most recent filing on this page is 2026 Q2, when RENAISSANCE TECHNOLOGIES LLC reported 117,440 shares, equal to 0.00% of portfolio, with an estimated market value of $342K.

What does the chart on this XBIO ownership page compare?

The chart compares RENAISSANCE TECHNOLOGIES LLC's quarterly XBIO portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did RENAISSANCE TECHNOLOGIES LLC time their XBIO position?

Based on 13F filing dates vs. subsequent XBIO price moves, RENAISSANCE TECHNOLOGIES LLC correctly timed 8 out of 22 reported position changes (36%). The annualised alpha on XBIO relative to SPY over the holding period was +24.7%.

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