Vault-13

QUANTUM SI INC

*W EXP 06/10/202 · Equity WRT · CUSIP 74765K113

0 institutional holders -6 vs Q1 2026
—reported value*
0 new 0 added 0 reduced 6 sold out net sold ≈ $50.0k (-451.7k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

051015Q3 22: 11Q4 22: 13Q1 23: 9Q2 23: 8Q3 23: 7Q4 23: 6Q1 24: 9Q2 24: 8Q3 24: 9Q4 24: 5Q1 25: 3Q2 25: 3Q3 25: 4Q4 25: 4Q1 26: 6Q2 26: 00Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 202211
Q4 202213
Q1 20239
Q2 20238
Q3 20237
Q4 20236
Q1 20249
Q2 20248
Q3 20249
Q4 20245
Q1 20253
Q2 20253
Q3 20254
Q4 20254
Q1 20266
Q2 20260

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
10010Q3 24: 4 bought or addedQ3 24: 2 cut or sold outQ4 24: 2 bought or addedQ4 24: 5 cut or sold outQ4 24Q1 25: 0 bought or addedQ1 25: 2 cut or sold outQ2 25: 0 bought or addedQ2 25: 1 cut or sold outQ2 25Q3 25: 3 bought or addedQ3 25: 0 cut or sold outQ4 25: 1 bought or addedQ4 25: 2 cut or sold outQ4 25Q1 26: 2 bought or addedQ1 26: 3 cut or sold outQ2 26: 0 bought or addedQ2 26: 6 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 202442
Q4 202425
Q1 202502
Q2 202501
Q3 202530
Q4 202512
Q1 202623
Q2 202606

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$10k$20k$30kQ3 25 calls: $23.5kQ3 25 puts: $0Q3 25P/C 0.00Q4 25 calls: $17.5kQ4 25 puts: $0Q4 25P/C 0.00Q1 26 calls: $9.5kQ1 26 puts: $0Q1 26P/C 0.00Q2 26 calls: $0Q2 26 puts: $0Q2 26P/C —
Numbers
QuarterCallsPutsP/C
Q3 2025$23.5k$00.00
Q4 2025$17.5k$00.00
Q1 2026$9.5k$00.00
Q2 2026$0$0—

Biggest buyers

None

Biggest sellers

DEERFIELD MANAGEMENT COMPANY, L.P. Sold out -333,333-333.3k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Sold out -85,121-85.1k
JANE STREET GROUP, LLC Sold out -16,565-16.6k
WOLVERINE ASSET MANAGEMENT LLC Sold out -14,522-14.5k
UBS Group AG Sold out -2,080-2.1k
TORONTO DOMINION BANK Sold out -100-100

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change