13F

Stock

Nephros Inc

NEPH · held by 27 managers

Reported value

$16M

Holders

27

+1 new · −9 exited

Holders’ est. mark

−$9.18M

Price effect on 24 books still in the name

Largest holder

$10.7M

WEXFORD CAPITAL LP

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
WEXFORD CAPITAL LP3.6M$10.7M−$6.84MCut−$6.92M
Topline Capital Management, LLC582K$1.73M−$1.11MCut−$1.26M
VANGUARD CAPITAL MANAGEMENT LLC198.6K$592KHeld
Cornerstone Capital, Inc.128.7K$383.5KNew
BARD ASSOCIATES INC121.2K$361.2K−$230.3KCut−$232.3K
Mesirow Financial Investment Management, Inc.120K$357.6K−$95KAdded$113.6K
MORGAN STANLEY110.9K$330.5K−$34.1KAdded$242.9K
Renaissance Technologies99.4K$296.2K−$188.9KCut−$210.2K
GEODE CAPITAL MANAGEMENT, LLC72.9K$217.4K−$138.6KCut−$146.9K
HighTower Advisors, LLC59.7K$177.9K−$113.4KCut−$113.4K
ESSEX INVESTMENT MANAGEMENT CO LLC39K$116.2K−$74.1KCut−$74.1K
VANGUARD FIDUCIARY TRUST CO36.9K$110KHeld
BLAIR WILLIAM & CO/IL36.2K$108K−$68.9KCut−$68.9K
De Lisle Partners LLP25K$74.5K−$47.5KCut−$47.5K
Citadel20.9K$62.2K−$39.3KCut−$38.8K
DIMENSIONAL FUND ADVISORS LP20.7K$61.8K−$25.8KCut−$4.55K
NAVELLIER & ASSOCIATES INC19.1K$57K−$36.3KCut−$75.6K
State Street15.7K$46.8K−$29.8KCut−$29.8K
GOLDMAN SACHS GROUP INC14.2K$42.2K−$26.9KCut−$50.4K
PRELUDE CAPITAL MANAGEMENT, LLC13.7K$40.8K−$26KCut−$33.3K
ELKHORN PARTNERS LIMITED PARTNERSHIP12K$35.8K−$13.3KAdded$1.6K
Cannell & Spears LLC11K$32.8K−$20.9KCut−$20.9K
NORTHERN TRUST CORP10.8K$32.3K−$20.6KCut−$20.6K
ROYAL BANK OF CANADA747$2K−$2.02KCut−$2K
OSAIC HOLDINGS, INC.175$521−$333Cut−$7.41K
HARBOUR INVESTMENTS, INC.50$149−$95Cut−$95
JONES FINANCIAL COMPANIES LLLP31$90−$61Cut−$61

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.