Jim Simons
NEPH icon

Jim Simons’s Nephros NEPH Stock Holding History

Jim Simons’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
2026
Q2 		$277K Sell
77,504
-21,896
-22% -$71.2K ﹤0.01% 2799
2026
Q1 		$296K Sell
99,400
-4,372
-4% -$17.5K ﹤0.01% 2792
2025
Q4 		$506K Buy
103,772
+21,272
+26% +$109K ﹤0.01% 2571
2025
Q3 		$390K Buy
82,500
+71,600
+657% +$281K ﹤0.01% 2894
2025
Q2 		$44.6K Buy
+10,900
New +$29.1K ﹤0.01% 3410
2024
Q4 		– Sell
-24,444
Closed -$41.8K – 3788
2024
Q3 		$41.8K Sell
24,444
-16,556
-40% -$32.7K ﹤0.01% 3360
2024
Q2 		$86.5K Sell
41,000
-200
-0.5% -$432 ﹤0.01% 3209
2024
Q1 		$90K Buy
+41,200
New +$131K ﹤0.01% 3392
2023
Q3 		– Sell
-13,705
Closed -$21K – 3953
2023
Q2 		$21K Sell
13,705
-9,495
-41% -$14K ﹤0.01% 3766
2023
Q1 		$25K Sell
23,200
-8,864
-28% -$10.2K ﹤0.01% 3790
2022
Q4 		$37K Buy
32,064
+9,764
+44% +$10.4K ﹤0.01% 3853
2022
Q3 		$20K Buy
+22,300
New +$31.5K ﹤0.01% 3897
2022
Q2 		– Sell
-20,317
Closed -$89K – 4456
2022
Q1 		$89K Buy
+20,317
New +$96.4K ﹤0.01% 3816
2020
Q3 		– Sell
-17,900
Closed -$150K – 3576
2020
Q2 		$150K Buy
+17,900
New +$142K ﹤0.01% 3213

Other funds holding NEPH

Wexford Capital
Wexford Capital West Palm Beach, Florida $782M AUM 62.56% 1-Year Est. Return
Topline Capital Management
Topline Capital Management Santa Monica, California $386M AUM 2.37% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
CC
Cornerstone Capital Palo Alto, California $1.12B AUM 28.84% 1-Year Est. Return
Bard Associates
Bard Associates Chicago, Illinois $451M AUM 66.6% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Mesirow Financial Investment Management
Mesirow Financial Investment Management Chicago, Illinois $6.37B AUM 23.22% 1-Year Est. Return
HighTower Advisors
HighTower Advisors Chicago, Illinois $104B AUM 28.3% 1-Year Est. Return
Navellier & Associates
Navellier & Associates Reno, Nevada $1.26B AUM 95.39% 1-Year Est. Return

Jim Simons's NEPH Position: Q2 2026 in Review

Jim Simons reduced its Nephros (NEPH) stake by 22% in Q2 2026, selling an estimated $71.2K and leaving 77,504 shares worth $277K. The position accounts for ﹤0.01% of the portfolio, ranked #2799.

Jim Simons first reported a position in NEPH in Q2 2020 and has held it in 14 quarters since. The position peaked at $506K in Q4 2025. 33 funds tracked by Wall St. Rank hold NEPH as of Q2 2026.

  • Jim Simons held 77,504 shares of Nephros worth $277K as of Q2 2026.
  • Jim Simons sold 21,896 Nephros shares in Q2 2026, an estimated $71.2K.
  • Nephros made up ﹤0.01% of Jim Simons's portfolio in Q2 2026, its #2799 holding.
  • Jim Simons first reported a position in Nephros in Q2 2020 and has held it in 14 quarters since.
  • Jim Simons's Nephros position peaked at $506K in Q4 2025.
  • 33 funds tracked by Wall St. Rank held Nephros as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.