Renaissance Technologies
NEPH icon

Renaissance Technologies’s Nephros NEPH Stock Holding History

Renaissance Technologies’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
Q3 		$264K Sell
71,100
-6,404
-8% -$25.6K ﹤0.01% 2829
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

Massachusetts Institute of Technology
Massachusetts Institute of Technology Cambridge, Massachusetts $695M AUM 43.77% 1-Year Est. Return
Wexford Capital
Wexford Capital West Palm Beach, Florida $763M AUM 59.25% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Meritage Group
Meritage Group San Francisco, California $2.78B AUM 9.1% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return
Bard Associates
Bard Associates Chicago, Illinois $431M AUM 30.93% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Mesirow Financial Investment Management
Mesirow Financial Investment Management Chicago, Illinois $6.47B AUM 15.41% 1-Year Est. Return
HighTower Advisors
HighTower Advisors Chicago, Illinois $106B AUM 21.33% 1-Year Est. Return
Essex Investment Management
Essex Investment Management Boston, Massachusetts $675M AUM 61.81% 1-Year Est. Return

Renaissance Technologies's NEPH Position: Q3 2026 in Review

Renaissance Technologies reduced its Nephros (NEPH) stake by 8.3% in Q3 2026, selling an estimated $25.6K and leaving 71,100 shares worth $264K. The position accounts for ﹤0.01% of the portfolio, ranked #2829.

Renaissance Technologies first reported a position in NEPH in Q2 2020 and has held it in 15 quarters since. The position peaked at $506K in Q4 2025. 26 funds tracked by Wall St. Rank hold NEPH as of Q3 2026.

  • Renaissance Technologies held 71,100 shares of Nephros worth $264K as of Q3 2026.
  • Renaissance Technologies sold 6,404 Nephros shares in Q3 2026, an estimated $25.6K.
  • Nephros made up ﹤0.01% of Renaissance Technologies's portfolio in Q3 2026, its #2829 holding.
  • Renaissance Technologies first reported a position in Nephros in Q2 2020 and has held it in 15 quarters since.
  • Renaissance Technologies's Nephros position peaked at $506K in Q4 2025.
  • 26 funds tracked by Wall St. Rank held Nephros as of Q3 2026.

Based on Renaissance Technologies's 13F filing for Q3 2026, filed 12 Nov 2026.