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Portman Square Capital LLP

Position in ON — On Semiconductor Corp

CIK 1966898 London, X0

Position in ON

as of Jun 30, 2026 · filed Jul 15, 2026
Position Value
$3,315,045
-$2,637,572 QoQ
Shares Held
35,065
-63.5% QoQ
Ownership
0.009%
of shares outstanding
% of Portfolio
1.13%
of 13F equity value
Holder Rank
#341
of 994 holders
Holding Since
Mar 2023
14 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ON Over Time

Shares Held

Position Value (USD)

Derivatives in ON

reported options exposure · as of Jun 30, 2026
CallValue
$0
CallShares
0
PutValue
$26,215,942
PutShares
277,300

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Semiconductors

Technology · as of Jun 30, 2026

Portman Square Capital LLP holds $3,315,045 across 1 Semiconductors name. ON ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ON
On Semiconductor Corp
This page
35,065 $3,315,045

All Filings in ON

Export CSV
30 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,315,045 35,065
2026-06-30 $26,215,942 277,300
2026-03-31 $5,952,617 96,134
2026-03-31 $27,969,264 451,700
2025-12-31 $1,815,378 33,525
2025-12-31 $14,533,860 268,400
2025-09-30 $13,920,213 282,300
2025-09-30 $880,972 17,866
2025-09-30 $12,327,500 250,000
2025-06-30 $15,555,288 296,800
2025-06-30 $5,094,252 97,200
2025-03-31 $26,448,500 650,000
2024-12-31 $9,615,125 152,500
2024-09-30 $11,073,025 152,500
2024-09-30 $994,974 13,703
2024-06-30 $1,338,370 19,524
2024-06-30 $9,939,750 145,000
2024-03-31 $639,149 8,690
2024-03-31 $10,370,550 141,000
2023-12-31 $1,729,071 20,700
2023-12-31 $498,507 5,968
2023-12-31 $12,846,914 153,800
2023-09-30 $13,310,440 143,200
2023-09-30 $1,924,065 20,700
2023-09-30 $3,950,467 42,501
2023-06-30 $3,766,081 39,819
2023-06-30 $32,053,162 338,900
2023-06-30 $1,957,806 20,700
2023-03-31 $19,402,824 235,700
2023-03-31 $3,842,615 46,679