Position in NPKI
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$5,303
-$2,301 QoQ
Shares Held
366
-42.6% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2025
3 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.ToString("F0")%
None 0.ToString("F0")%
Common Shares in NPKI Over Time
Shares Held
Position Value (USD)
Position in Building Products & Equipment
Industrials · as of Mar 31, 2026Optiver Holding B.V. holds $128,255 across 10 Building Products & Equipment names. NPKI ranks #6 (4.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | JCI |
Johnson Controls International plc
|
402 | $52,641 | |
| 2 | SPXC |
SPX Technologies, Inc.
|
181 | $36,189 | |
| 3 | ASPN |
Aspen Aerogels Inc
|
4,207 | $14,387 | |
| 4 | LMB |
Limbach Holdings, Inc.
|
92 | $7,180 | |
| 5 | JBI |
Janus International Group, Inc.
|
1,173 | $6,040 | |
| 6 | NPKI |
NPK International Inc.
This page
|
366 | $5,303 | |
| 7 | NX |
Quanex Building Products CORP
|
182 | $3,270 | |
| 8 | SWIM |
Latham Group, Inc.
|
402 | $2,158 |
All Filings in NPKI
Export CSV
3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $5,303 | 366 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $7,604 | 638 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $7,170 | 634 | Shares | Defined | 2025-11-10 | |
| No filing history on record for this holder in this stock. | ||||||