XT
LBRX

XTX Topco’s LB Pharmaceuticals LBRX Stock Holding History

XTX Topco’s Portfolio LBRX Stock Details LBRX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.53M Buy
+47,006
New +$1.38M 0.02% 1380
2026
Q1 		– Sell
-19,121
Closed -$426K – 4577
2025
Q4 		$426K Buy
19,121
+7,845
+70% +$137K 0.01% 1757
2025
Q3 		$178K Buy
+11,276
New +$179K 0.01% 1886

Other funds holding LBRX

DTC
Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
TECP
Trails Edge Capital Partners Atlanta, Georgia $630M AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
CC
Commodore Capital New York $1.68B AUM 375.52% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
CP
Caligan Partners New York $2.13B AUM 758.65% 1-Year Est. Return
SSC
Spruce Street Capital New York $510M AUM
NCM
Nantahala Capital Management New Canaan, Connecticut $3.01B AUM 119.46% 1-Year Est. Return

XTX Topco's LBRX Position: Q2 2026 in Review

XTX Topco opened a new position in LB Pharmaceuticals (LBRX) in Q2 2026: 47,006 shares worth $1.53M. The stake represents 0.02% of the portfolio and ranks #1380 among its holdings. This is a return to the name: XTX Topco previously reported a position in LBRX as recently as Q4 2025.

XTX Topco first reported a position in LBRX in Q3 2025 and has held it in 3 quarters since. 114 funds tracked by Wall St. Rank hold LBRX as of Q2 2026.

  • XTX Topco held 47,006 shares of LB Pharmaceuticals worth $1.53M as of Q2 2026.
  • LB Pharmaceuticals was a new XTX Topco position in Q2 2026.
  • LB Pharmaceuticals made up 0.02% of XTX Topco's portfolio in Q2 2026, its #1380 holding.
  • XTX Topco first reported a position in LB Pharmaceuticals in Q3 2025 and has held it in 3 quarters since.
  • 114 funds tracked by Wall St. Rank held LB Pharmaceuticals as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.