EIM
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Essex Investment Management’s Nephros NEPH Stock Holding History

Essex Investment Management’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
Q1 		$116K Hold
38,984
– – 0.02% 228
2025
Q4 		$190K Buy
38,984
+14,162
+57% +$72.4K 0.03% 209
2025
Q3 		$117K Hold
24,822
– – 0.02% 219
2025
Q2 		$102K Buy
+24,822
New +$66.3K 0.02% 223
2020
Q3 		– Sell
-39,863
Closed -$334K – 496
2020
Q2 		$334K Hold
39,863
– – 0.05% 285
2020
Q1 		$251K Buy
+39,863
New +$338K 0.05% 270

Other funds holding NEPH

WC
Wexford Capital West Palm Beach, Florida $690M AUM 57.88% 1-Year Est. Return
TCM
Topline Capital Management Santa Monica, California $605M AUM 26.24% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
CC
Cornerstone Capital Palo Alto, California $1.12B AUM 28.84% 1-Year Est. Return
BA
Bard Associates Chicago, Illinois $451M AUM 66.6% 1-Year Est. Return
MFIM
Mesirow Financial Investment Management Chicago, Illinois $6.37B AUM 23.22% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 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
HighTower Advisors
HighTower Advisors Chicago, Illinois $103B AUM 28.65% 1-Year Est. Return

Essex Investment Management's NEPH Position: Q1 2026 in Review

Essex Investment Management held its Nephros (NEPH) position steady in Q1 2026 at 38,984 shares worth $116K. The position accounts for 0.02% of the portfolio, ranked #228.

Essex Investment Management first reported a position in NEPH in Q1 2020 and has held it in 6 quarters since. The position peaked at $334K in Q2 2020. 27 funds tracked by Wall St. Rank hold NEPH as of Q1 2026.

  • Essex Investment Management held 38,984 shares of Nephros worth $116K as of Q1 2026.
  • Essex Investment Management left its Nephros share count unchanged in Q1 2026.
  • Nephros made up 0.02% of Essex Investment Management's portfolio in Q1 2026, its #228 holding.
  • Essex Investment Management first reported a position in Nephros in Q1 2020 and has held it in 6 quarters since.
  • Essex Investment Management's Nephros position peaked at $334K in Q2 2020.
  • 27 funds tracked by Wall St. Rank held Nephros as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.