Robeco Institutional Asset Management B.V.
Position in AMBA — Ambarella Inc
CIK 1418773
ROTTERDAM, P7
Position in AMBA
as of Mar 31, 2026
· filed Apr 21, 2026
Position Value
$668,364
-$135,882 QoQ
Shares Held
12,983
+14.4% QoQ
Ownership
0.030%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
5 quarters on record
Voting authority
Sole 97.40429792805976.ToString("F0")%
Shared 0.ToString("F0")%
None 2.5957020719402295.ToString("F0")%
Common Shares in AMBA Over Time
Shares Held
Position Value (USD)
Position in Semiconductor Equipment & Materials
Technology · as of Mar 31, 2026Robeco Institutional Asset Management B.V. holds $1,136,169,919 across 8 Semiconductor Equipment & Materials names. AMBA ranks #8 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | AMAT |
Applied Materials Inc /De
|
1,757,378 | $600,654,226 | |
| 2 | LRCX |
Lam Research Corp
|
2,060,775 | $440,305,186 | |
| 3 | KLAC |
Kla Corp
|
303,514 | $44,689,704 | |
| 4 | TER |
Teradyne, Inc
|
121,314 | $35,964,748 | |
| 5 | Q |
Qnity Electronics, Inc.
|
66,076 | $7,623,848 | |
| 6 | ONTO |
Onto Innovation Inc.
|
16,007 | $3,282,555 | |
| 7 | PLAB |
Photronics Inc
|
73,776 | $2,981,288 | |
| 8 | AMBA |
Ambarella Inc
This page
|
12,983 | $668,364 |
All Filings in AMBA
Export CSV
5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $668,364 | 12,983 | Shares | Defined | 2026-04-21 | |
| 2025-12-31 | $804,246 | 11,353 | Shares | Defined | 2026-01-23 | |
| 2025-09-30 | $936,849 | 11,353 | Shares | Defined | 2025-10-22 | |
| 2025-06-30 | $276,899 | 4,191 | Shares | Defined | 2025-07-18 | |
| 2020-03-31 | $1,797,011 | 37,006 | Shares | Defined | 2021-01-19 | |
| No filing history on record for this holder in this stock. | ||||||