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 | |
|---|---|---|---|---|---|---|
1951
PAR Technology
PAR
$716M
| $2.25K | ﹤0.01% |
62
-74
| -54% | -$2.67K |
|
1952
Chesapeake Utilities
CPK
$3.28B
| $2.25K | ﹤0.01% |
18
-64
| -78% | -$8.44K |
|
1953
Monro
MNRO
$414M
| $2.24K | ﹤0.01% |
112
-156
| -58% | -$2.87K |
|
1954
Miller Industries
MLR
$577M
| $2.24K | ﹤0.01% |
60
-86
| -59% | -$3.35K |
|
1955
Pioneer Bancorp
PBFS
$445M
| $2.24K | ﹤0.01% |
166
| – | – |
|
1956
FB Financial Corp
FBK
$2.98B
| $2.23K | ﹤0.01% |
40
-168
| -81% | -$9.39K |
|
|
TRST
1957
Trustco Bank Corp NY
TRST
$953M
| $2.23K | ﹤0.01% |
54
-46
| -46% | -$1.83K |
|
1958
Reservoir Media
RSVR
$727M
| $2.22K | ﹤0.01% |
294
| – | – |
|
1959
Taylor Devices
TAYD
$176M
| $2.22K | ﹤0.01% |
38
| – | – |
|
|
HPP
1960
Hudson Pacific Properties
HPP
$758M
| $2.22K | ﹤0.01% |
205
-94
| -31% | -$1.4K |
|
1961
Insteel Industries
IIIN
$592M
| $2.22K | ﹤0.01% |
70
-48
| -41% | -$1.57K |
|
1962
ACV Auctions
ACVA
$1.41B
| $2.21K | ﹤0.01% |
276
-534
| -66% | -$4.32K |
|
1963
Pricesmart
PSMT
$5.94B
| $2.21K | ﹤0.01% |
18
-68
| -79% | -$8.3K |
|
1964
UL Solutions
ULS
$18.6B
| $2.21K | ﹤0.01% |
+28
| New | +$2.25K |
|
|
BFS
1965
Saul Centers
BFS
$858M
| $2.21K | ﹤0.01% |
70
| – | – |
|
|
RPC
1966
Ridgepost Capital
RPC
$926M
| $2.2K | ﹤0.01% |
224
-134
| -37% | -$1.36K |
|
1967
Quanterix
QTRX
$159M
| $2.19K | ﹤0.01% |
345
-384
| -53% | -$2.38K |
|
1968
ASP Isotopes
ASPI
$446M
| $2.19K | ﹤0.01% |
409
-179
| -30% | -$1.42K |
|
|
RAPP
1969
Rapport Therapeutics
RAPP
$1.96B
| $2.18K | ﹤0.01% |
72
-34
| -32% | -$941 |
|
1970
Trustmark
TRMK
$2.75B
| $2.18K | ﹤0.01% |
56
-210
| -79% | -$8.18K |
|
1971
Matrix Service
MTRX
$312M
| $2.18K | ﹤0.01% |
186
-276
| -60% | -$3.47K |
|
1972
Twin Disc
TWIN
$321M
| $2.17K | ﹤0.01% |
130
| – | – |
|
1973
Palomar
PLMR
$3.79B
| $2.16K | ﹤0.01% |
16
-56
| -78% | -$6.84K |
|
|
THR
1974
DELISTED
Thermon Group Holdings
THR
| $2.15K | ﹤0.01% |
58
-170
| -75% | -$5.58K |
|
|
SEVN
1975
Seven Hills Realty Trust
SEVN
$173M
| $2.15K | ﹤0.01% |
242
| – | – |
|
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.