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 | |
|---|---|---|---|---|---|---|
2276
Mammoth Energy Services
TUSK
$125M
| $607 | ﹤0.01% |
328
| – | – |
|
2277
BARK
BARK
$78.4M
| $601 | ﹤0.01% |
50
+2
| +4% | +$30 |
|
2278
WisdomTree
WT
$2.97B
| $597 | ﹤0.01% |
49
+12
| +32% | +$145 |
|
2279
IDEAYA Biosciences
IDYA
$3.48B
| $588 | ﹤0.01% |
17
-511
| -97% | -$16.3K |
|
2280
CAVA Group
CAVA
$7.57B
| $587 | ﹤0.01% |
10
-203
| -95% | -$11.3K |
|
2281
Simulations Plus
SLP
$371M
| $583 | ﹤0.01% |
32
| – | – |
|
2282
The GEO Group
GEO
$4.11B
| $580 | ﹤0.01% |
36
-618
| -94% | -$10.3K |
|
2283
Cartesian Therapeutics
RNAC
$225M
| $577 | ﹤0.01% |
80
| – | – |
|
2284
DLH Holdings
DLHC
$75.7M
| $571 | ﹤0.01% |
101
+1
| +1% | +$6 |
|
2285
MarketWise
MKTW
$54.6M
| $556 | ﹤0.01% |
37
+1
| +3% | +$16 |
|
2286
Prime Medicine
PRME
$558M
| $555 | ﹤0.01% |
160
-738
| -82% | -$3.28K |
|
2287
Valhi
VHI
$386M
| $554 | ﹤0.01% |
46
| – | – |
|
2288
Array Technologies
ARRY
$785M
| $544 | ﹤0.01% |
59
-890
| -94% | -$7.63K |
|
2289
Rackspace Technology
RXT
$967M
| $544 | ﹤0.01% |
560
-890
| -61% | -$1.12K |
|
2290
Viper Energy
VNOM
$8.21B
| $541 | ﹤0.01% |
+14
| New | +$530 |
|
2291
Century Communities
CCS
$2.05B
| $534 | ﹤0.01% |
9
-122
| -93% | -$7.42K |
|
2292
Weis Markets
WMK
$1.9B
| $513 | ﹤0.01% |
8
-84
| -91% | -$5.61K |
|
2293
Value Line
VALU
$344M
| $500 | ﹤0.01% |
13
+1
| +8% | +$38 |
|
2294
Grocery Outlet
GO
$902M
| $495 | ﹤0.01% |
49
-404
| -89% | -$5.08K |
|
2295
Rekor Systems
REKR
$86.9M
| $495 | ﹤0.01% |
359
-1,613
| -82% | -$3.29K |
|
2296
Atossa Therapeutics
ATOS
$24.1M
| $494 | ﹤0.01% |
+56
| New | +$708 |
|
2297
LeMaitre Vascular
LMAT
$2.34B
| $487 | ﹤0.01% |
6
-126
| -95% | -$10.8K |
|
2298
Standard BioTools
LAB
$311M
| $484 | ﹤0.01% |
378
-3,486
| -90% | -$4.68K |
|
2299
B&G Foods
BGS
$297M
| $482 | ﹤0.01% |
112
-67
| -37% | -$299 |
|
2300
Acushnet Holdings
GOLF
$6.05B
| $479 | ﹤0.01% |
6
-107
| -95% | -$8.68K |
|
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.