JY
NEPH icon

Jeff Yass’s Nephros NEPH Stock Holding History

Jeff Yass’s Portfolio NEPH Stock Details NEPH Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-10,373
Closed -$49.1K – 13164
2025
Q3 		$49.1K Sell
10,373
-19,052
-65% -$74.8K ﹤0.01% 11867
2025
Q2 		$120K Buy
29,425
+5,807
+25% +$15.5K ﹤0.01% 11672
2025
Q1 		$40.6K Sell
23,618
-184
-0.8% -$289 ﹤0.01% 11924
2024
Q4 		$34.8K Buy
+23,802
New +$36.3K ﹤0.01% 11806
2024
Q1 		– Sell
-11,784
Closed -$40.7K – 12940
2023
Q4 		$40.7K Buy
+11,784
New +$25.6K ﹤0.01% 11792
2023
Q2 		– Sell
-35,990
Closed -$39.2K – 12771
2023
Q1 		$39.2K Buy
+35,990
New +$41.4K ﹤0.01% 11804

Other funds holding NEPH

WC
Wexford Capital West Palm Beach, Florida $782M AUM 62.56% 1-Year Est. Return
TCM
Topline Capital Management Santa Monica, California $386M AUM 2.37% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BA
Bard Associates Chicago, Illinois $451M AUM 66.6% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Cambridge Investment Research Advisors
Cambridge Investment Research Advisors Fairfield, Iowa $44.6B AUM 28.94% 1-Year Est. Return
HighTower Advisors
HighTower Advisors Chicago, Illinois $103B AUM 28.65% 1-Year Est. Return
MFIM
Mesirow Financial Investment Management Chicago, Illinois $6.37B AUM 23.22% 1-Year Est. Return
EIM
Essex Investment Management Boston, Massachusetts $763M AUM 108.51% 1-Year Est. Return

Jeff Yass's NEPH Position: Q4 2025 in Review

Jeff Yass sold out of Nephros (NEPH) in Q4 2025, closing a stake of 10,373 shares — an estimated $49.1K sold.

Jeff Yass first reported a position in NEPH in Q1 2023 and held it in 6 quarters. The position peaked at $120K in Q2 2025. 35 funds tracked by Wall St. Rank hold NEPH as of Q4 2025.

  • Jeff Yass reported no remaining Nephros position as of Q4 2025 after selling out during the quarter.
  • Jeff Yass sold 10,373 Nephros shares in Q4 2025, an estimated $49.1K.
  • Jeff Yass first reported a position in Nephros in Q1 2023 and held it in 6 quarters.
  • Jeff Yass's Nephros position peaked at $120K in Q2 2025.
  • 35 funds tracked by Wall St. Rank held Nephros as of Q4 2025.

Based on Susquehanna International Group's 13F filing for Q4 2025, filed 17 Feb 2026.