Jane Street
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Jane Street’s Pulmatrix PULM Stock Holding History

Jane Street’s Portfolio PULM Stock Details PULM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$18.8K Buy
+14,584
New +$34.6K ﹤0.01% 11202
2019
Q2 		– Sell
-763
Closed -$19K – 5612
2019
Q1 		$19K Buy
+763
New +$25.5K ﹤0.01% 4906

Other funds holding PULM

Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
SS
SBI Securities Tokyo, Japan $4.4B AUM 74.26% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $5.75B AUM 30.56% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $3.85B AUM 32.11% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Jane Street's PULM Position: Q1 2026 in Review

Jane Street opened a new position in Pulmatrix (PULM) in Q1 2026: 14,584 shares worth $18.8K. The stake represents ﹤0.01% of the portfolio and ranks #11202 among its holdings. This is a return to the name: Jane Street previously reported a position in PULM as recently as Q1 2019.

Jane Street first reported a position in PULM in Q1 2019 and has held it in 2 quarters since. The position peaked at $19K in Q1 2019. 15 funds tracked by Wall St. Rank hold PULM as of Q1 2026.

  • Jane Street held 14,584 shares of Pulmatrix worth $18.8K as of Q1 2026.
  • Pulmatrix was a new Jane Street position in Q1 2026.
  • Pulmatrix made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #11202 holding.
  • Jane Street first reported a position in Pulmatrix in Q1 2019 and has held it in 2 quarters since.
  • Jane Street's Pulmatrix position peaked at $19K in Q1 2019.
  • 15 funds tracked by Wall St. Rank held Pulmatrix as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.