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 |
Oracle
ORCL
|
+$295M |
| 2 |
TSMC
TSM
|
+$248M |
| 3 |
iShares MSCI Brazil ETF
EWZ
|
+$231M |
| 4 |
Meta Platforms (Facebook)
META
|
+$169M |
| 5 |
Palantir
PLTR
|
+$131M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$1.12B |
| 2 |
Amazon
AMZN
|
+$502M |
| 3 |
Advanced Micro Devices
AMD
|
+$310M |
| 4 |
Microsoft
MSFT
|
+$215M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$165M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.66% |
| 2 | Communication Services | 0.18% |
| 3 | Consumer Discretionary | 0.16% |
| 4 | Financials | 0.14% |
| 5 | Healthcare | 0.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2176
Sera Prognostics
SERA
$79.5M
| $1.22K | ﹤0.01% |
412
| – | – |
|
2177
Consumer Portfolio Services
CPSS
$207M
| $1.21K | ﹤0.01% |
130
| – | – |
|
2178
KRONOS Worldwide
KRO
$712M
| $1.21K | ﹤0.01% |
274
| – | – |
|
2179
Byrna Technologies
BYRN
$90.1M
| $1.21K | ﹤0.01% |
72
-176
| -71% | -$3.43K |
|
2180
Comstock Resources
CRK
$3.64B
| $1.21K | ﹤0.01% |
52
-371
| -88% | -$8.18K |
|
|
PR
2181
Permian Resources
PR
$16.5B
| $1.19K | ﹤0.01% |
85
-1,405
| -94% | -$18.9K |
|
2182
Yext
YEXT
$564M
| $1.19K | ﹤0.01% |
148
-418
| -74% | -$3.52K |
|
2183
MeiraGTx Holdings
MGTX
$1.09B
| $1.19K | ﹤0.01% |
150
-462
| -75% | -$3.84K |
|
2184
Post Holdings
POST
$4.27B
| $1.19K | ﹤0.01% |
+12
| New | +$1.24K |
|
|
CTNM
2185
Contineum Therapeutics
CTNM
$529M
| $1.19K | ﹤0.01% |
104
| – | – |
|
2186
ProPetro Holding
PUMP
$1.31B
| $1.18K | ﹤0.01% |
124
-40
| -24% | -$348 |
|
2187
NBT Bancorp
NBTB
$2.79B
| $1.16K | ﹤0.01% |
28
-248
| -90% | -$10.3K |
|
2188
Virco
VIRC
$94.7M
| $1.15K | ﹤0.01% |
180
| – | – |
|
2189
Blend Labs
BLND
$433M
| $1.15K | ﹤0.01% |
379
-903
| -70% | -$2.88K |
|
|
ACH
2190
Accendra Health
ACH
$249M
| $1.15K | ﹤0.01% |
411
+195
| +90% | +$697 |
|
|
MAPS
2191
DELISTED
WM TECHNOLOGY INC A
MAPS
| $1.15K | ﹤0.01% |
1,394
| – | – |
|
2192
NI Holdings
NODK
$321M
| $1.14K | ﹤0.01% |
86
| – | – |
|
2193
10x Genomics
TXG
$5.97B
| $1.14K | ﹤0.01% |
70
-732
| -91% | -$11.1K |
|
2194
Nerdy
NRDY
$110M
| $1.13K | ﹤0.01% |
1,090
| – | – |
|
2195
Orion
OEC
$400M
| $1.13K | ﹤0.01% |
214
| – | – |
|
|
EEX
2196
DELISTED
Emerald Holding
EEX
| $1.13K | ﹤0.01% |
252
| – | – |
|
2197
SoundThinking
SSTI
$110M
| $1.12K | ﹤0.01% |
140
| – | – |
|
2198
Nkarta
NKTX
$159M
| $1.12K | ﹤0.01% |
606
| – | – |
|
2199
Fate Therapeutics
FATE
$270M
| $1.11K | ﹤0.01% |
1,132
-1,659
| -59% | -$1.99K |
|
|
MPX
2200
DELISTED
Marine Products Corp
MPX
| $1.1K | ﹤0.01% |
126
| – | – |
|
Similar funds
Optiver Holding's Q4 2025 Portfolio in Review
As of Q4 2025, Optiver Holding held 3,112 positions worth $269B, up 7.3% from $251B the previous quarter. Its ten largest holdings account for 71% of the portfolio.
Optiver Holding deployed $10.6B of net new capital in Q4 2025, opening 446 new positions and adding to 524 existing holdings. Its largest new stake was Palantir: 723,942 shares worth $129M.
By sector, the portfolio is most concentrated in Technology at 0.66% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was State Street SPDR S&P 500 ETF Trust, an estimated $1.12B trimmed.
- Optiver Holding's largest Q4 2025 buy was Palantir: 723,942 shares worth $129M.
- Optiver Holding added most to Oracle in Q4 2025, an estimated $295M increase.
- Optiver Holding's biggest Q4 2025 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $1.12B.
- Optiver Holding fully exited Rio Tinto in Q4 2025, selling an estimated $48.2M.
- Optiver Holding's ten largest holdings make up 71% of its $269B portfolio in Q4 2025.
- Optiver Holding opened 446 new positions and closed 673 in Q4 2025.
- Optiver Holding's portfolio value rose 7.3% quarter-over-quarter to $269B.
Based on Optiver Holding's 13F filing for Q4 2025, filed 17 Feb 2026.