Renaissance Technologies’s XBiotech XBIT Stock Holding History

Renaissance Technologies’s Portfolio XBIT Stock Details XBIT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$52.7K	Buy	+22,438	New	+$54.3K	﹤0.01%	3106
2023 Q4	–	Sell	-15,287	Closed	-$63K	–	4201
2023 Q3	$63K	Sell	15,287 -13,048	-46%	-$65.3K	﹤0.01%	3355
2023 Q2	$168K	Sell	28,335 -24,160	-46%	-$109K	﹤0.01%	3333
2023 Q1	$181K	Sell	52,495 -48,973	-48%	-$182K	﹤0.01%	3320
2022 Q4	$356K	Sell	101,468 -54,000	-35%	-$184K	﹤0.01%	3151
2022 Q3	$563K	Buy	155,468 +76,800	+98%	+$362K	﹤0.01%	2860
2022 Q2	$443K	Buy	+78,668	New	+$529K	﹤0.01%	3226

Other funds holding XBIT

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

RBF Capital San Francisco, California $2.05B AUM 29.64% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

BCM

Bridgeway Capital Management Houston, Texas $4.97B AUM 44.96% 1-Year Est. Return

VFT

Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Renaissance Technologies's XBIT Position: Q1 2026 in Review

Renaissance Technologies opened a new position in XBiotech (XBIT) in Q1 2026: 22,438 shares worth $52.7K. The stake represents ﹤0.01% of the portfolio and ranks #3106 among its holdings. This is a return to the name: Renaissance Technologies previously reported a position in XBIT as recently as Q3 2023.

Renaissance Technologies first reported a position in XBIT in Q2 2022 and has held it in 7 quarters since. The position peaked at $563K in Q3 2022. 37 funds tracked by Wall St. Rank hold XBIT as of Q1 2026.

Renaissance Technologies held 22,438 shares of XBiotech worth $52.7K as of Q1 2026.
XBiotech was a new Renaissance Technologies position in Q1 2026.
XBiotech made up ﹤0.01% of Renaissance Technologies's portfolio in Q1 2026, its #3106 holding.
Renaissance Technologies first reported a position in XBiotech in Q2 2022 and has held it in 7 quarters since.
Renaissance Technologies's XBiotech position peaked at $563K in Q3 2022.
37 funds tracked by Wall St. Rank held XBiotech as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.