AI Holders Summary · Q1 2026

39 institutions reported NSPR in Q1 2026. Rosalind Advisors, Inc. leads at 17.1% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

Hide index funds / market makers / custodians(1 on this page)

#HolderValueShares% port.Quarter

Rosalind Advisors, Inc.

CIK 0001622627

$6M3.9M2.56%Q1 2026 02

Nantahala Capital Management, LLC

CIK 0001472322

$6M3.4M0.20%Q1 2026 03

Aberdeen Group plc

CIK 0001716774

$5M3.2M0.01%Q1 2026 04

ORBIMED ADVISORS LLC

CIK 0001055951

$5M3.1M0.10%Q1 2026 05

Parkman Healthcare Partners LLC

CIK 0001777015

$4M2.4M0.41%Q1 2026 06

Velan Capital Investment Management LP

CIK 0001848809

$3M2.1M2.14%Q1 2026 07

MARSHALL WACE, LLP

CIK 0001318757

$3M1.9M0.00%Q4 2025 08

Soleus Capital Management, L.P.

CIK 0001802630

$2M1.0M0.07%Q1 2026 09

PURA VIDA INVESTMENTS, LLC

CIK 0001590144

$734K451K4.94%Q1 2026 10

INGALLS & SNYDER LLC

CIK 0001041885

$618K379K0.02%Q1 2026 11

CITADEL ADVISORS LLC

CIK 0001423053

$345K194K0.00%Q4 2025 12

ESSEX INVESTMENT MANAGEMENT CO LLC

CIK 0000201772

$186K114K0.03%Q1 2026 13

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$183K112K0.00%Q1 2026 14

Affiance Financial, LLC

CIK 0001723681

$175K250K0.03%Q2 2026 15

BlackRock, Inc.

CIK 0002012383

$131K80K0.00%Q1 2026 16

MORGAN STANLEY

CIK 0000895421

$65K40K0.00%Q1 2026 17

NORTHERN TRUST CORP

CIK 0000073124· Index

$55K34K0.00%Q1 2026 18

Legato Capital Management LLC

CIK 0001442641

$44K27K0.00%Q1 2026 19

Centiva Capital, LP

CIK 0001692507

$40K25K0.00%Q1 2026 20

VESTIA PERSONAL WEALTH ADVISORS

CIK 0002033299

$40K24K0.02%Q1 2026

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