Optiver Holding Portfolio holdings
Optiver Holding B.V., founded in 1986 by Johann Kaemingk, Ruud Vlek, and Chris Oomen in Amsterdam, Netherlands, is a leading global proprietary trading firm and market maker specializing in options, derivatives, equities, ETFs, bonds, and foreign exchange. Starting as an options market maker on the European Options Exchange (now Euronext), Optiver has grown into a tech-driven powerhouse with over 2,000 employees across offices in Chicago, Sydney, London, Singapore, and beyond, trading on more than 50 exchanges worldwide. Known for its advanced algorithms and low-latency systems, the firm provides liquidity and competitive pricing, emphasizing market efficiency and stability, though it faced a $14 million fine in 2012 for illegal "banging the close" tactics in U.S. oil futures. Privately owned and led by CEO Rob Defares, Optiver blends a collaborative culture with cutting-edge technology, making it a significant player in the global financial ecosystem.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$1.12B |
| 2 |
NVIDIA
NVDA
|
+$486M |
| 3 |
Apple
AAPL
|
+$199M |
| 4 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$189M |
| 5 |
Microsoft
MSFT
|
+$164M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Advanced Micro Devices
AMD
|
+$134M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$75.2M |
| 3 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$69M |
| 4 |
Broadcom
AVGO
|
+$50.6M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$48.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.66% |
| 2 | Technology | 0.92% |
| 3 | Financials | 0.16% |
| 4 | Communication Services | 0.1% |
| 5 | Consumer Discretionary | 0.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2051
Old Second Bancorp
OSBC
$1.27B
| $4.15K | ﹤0.01% |
178
-8
| -4% | -$171 |
|
2052
Castle Biosciences
CSTL
$1.08B
| $4.15K | ﹤0.01% |
+174
| New | +$3.88K |
|
2053
LegalZoom.com
LZ
$1.04B
| $4.14K | ﹤0.01% |
676
+185
| +38% | +$1.13K |
|
2054
Trupanion
TRUP
$1.12B
| $4.14K | ﹤0.01% |
167
+113
| +209% | +$2.75K |
|
|
PHAR
2055
Pharming Group
PHAR
$750M
| $4.14K | ﹤0.01% |
+305
| New | +$4.42K |
|
2056
John B. Sanfilippo & Son
JBSS
$802M
| $4.13K | ﹤0.01% |
48
+26
| +118% | +$2.06K |
|
2057
Rogers Communications
RCI
$19.4B
| $4.13K | ﹤0.01% |
+127
| New | +$4.58K |
|
2058
AMERISAFE
AMSF
$458M
| $4.13K | ﹤0.01% |
122
+80
| +190% | +$2.53K |
|
|
AAT
2059
American Assets Trust
AAT
$1.34B
| $4.12K | ﹤0.01% |
167
+131
| +364% | +$2.87K |
|
2060
Koppers
KOP
$884M
| $4.09K | ﹤0.01% |
+91
| New | +$3.72K |
|
2061
American Express Global Business Travel
GBTG
$4.95B
| $4.08K | ﹤0.01% |
435
+392
| +912% | +$3.18K |
|
2062
Bel Fuse Inc Class A
BELFA
$2.78B
| $4.08K | ﹤0.01% |
14
-8
| -36% | -$1.95K |
|
|
CIM
2063
Chimera Investment
CIM
$912M
| $4.07K | ﹤0.01% |
305
-40
| -12% | -$535 |
|
2064
Crawford & Co Class A
CRD.A
$593M
| $4.07K | ﹤0.01% |
361
+175
| +94% | +$1.86K |
|
2065
American Vanguard Corp
AVD
$62.8M
| $4.07K | ﹤0.01% |
+1,452
| New | +$3.94K |
|
|
HOS
2066
Hornbeck Offshore Services, Inc.
HOS
$2.82B
| $4.05K | ﹤0.01% |
463
+356
| +333% | +$3.42K |
|
2067
Safety Insurance
SAFT
$1.52B
| $4.04K | ﹤0.01% |
54
-180
| -77% | -$13.1K |
|
2068
Mineralys Therapeutics
MLYS
$2.43B
| $3.99K | ﹤0.01% |
148
+68
| +85% | +$1.87K |
|
2069
Virtu Financial
VIRT
$5.06B
| $3.99K | ﹤0.01% |
+67
| New | +$3.52K |
|
|
LADR
2070
Ladder Capital
LADR
$1.21B
| $3.96K | ﹤0.01% |
398
-112
| -22% | -$1.14K |
|
2071
FLEX LNG
FLNG
$1.74B
| $3.96K | ﹤0.01% |
141
-27
| -16% | -$835 |
|
2072
Amylyx Pharmaceuticals
AMLX
$3.64B
| $3.95K | ﹤0.01% |
+220
| New | +$3.4K |
|
2073
BrightView Holdings
BV
$1.01B
| $3.94K | ﹤0.01% |
278
-48
| -15% | -$602 |
|
2074
Intapp
INTA
$2.83B
| $3.93K | ﹤0.01% |
156
-1,663
| -91% | -$37.9K |
|
2075
Trevi Therapeutics
TRVI
$2.14B
| $3.92K | ﹤0.01% |
210
-456
| -68% | -$6.63K |
|
Similar funds
Optiver Holding's Q2 2026 Portfolio in Review
As of Q2 2026, Optiver Holding held 3,179 positions worth $371B, up 28% from $289B the previous quarter. Its ten largest holdings account for 66% of the portfolio.
Optiver Holding's Q2 2026 filing shows 890 new, 894 increased, 893 reduced and 434 closed positions. Its largest new stake was Alphabet (Google) Class A: 397,783 shares worth $142M. The largest sale was Advanced Micro Devices, an estimated $134M.
By sector, the portfolio is most concentrated in Miscellaneous at 99% of assets, down from 99% a quarter earlier, followed by Technology and Financials.
- Optiver Holding's largest Q2 2026 buy was Alphabet (Google) Class A: 397,783 shares worth $142M.
- Optiver Holding added most to State Street SPDR S&P 500 ETF Trust in Q2 2026, an estimated $1.12B increase.
- Optiver Holding's biggest Q2 2026 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $75.2M.
- Optiver Holding fully exited Advanced Micro Devices in Q2 2026, selling an estimated $134M.
- Optiver Holding's ten largest holdings make up 66% of its $371B portfolio in Q2 2026.
- Optiver Holding opened 890 new positions and closed 434 in Q2 2026.
- Optiver Holding's portfolio value rose 28% quarter-over-quarter to $371B.
Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.