Position in OSIS
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$82,964,063
+$37,384,758 QoQ
Shares Held
379,351
+121.0% QoQ
Ownership
2.38%
of shares outstanding
% of Portfolio
0.25%
of 13F equity value
Holder Rank
#13
of 364 holders
Holding Since
Dec 2025
3 quarters on record
Voting authority
Sole 78%
Shared 0%
None 22%
Common Shares in OSIS Over Time
Shares Held
Position Value (USD)
Position in Electronic Components
Technology · as of Jun 30, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $839,006,758 across 8 Electronic Components names. OSIS ranks #3 (9.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | APH |
Amphenol Corp /De/
|
6,140,236 | $541,323,205 | |
| 2 | LFUS |
Littelfuse Inc /De
|
321,681 | $146,471,009 | |
| 3 | OSIS |
Osi Systems Inc
This page
|
379,351 | $82,964,063 | |
| 4 | FN |
Fabrinet
|
59,519 | $33,454,439 | |
| 5 | KN |
Knowles Corp
|
494,516 | $20,512,523 | |
| 6 | CLS |
Celestica Inc
|
34,892 | $12,728,601 | |
| 7 | FLEX |
Flex Ltd.
|
6,397 | $1,036,761 | |
| 8 | JBL |
Jabil Inc
|
1,339 | $516,157 |
All Filings in OSIS
Export CSV
3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $82,964,063 | 379,351 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $45,579,305 | 171,667 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $48,799,609 | 191,326 | Shares | Sole | 2026-02-09 | |
| No filing history on record for this holder in this stock. | ||||||