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 |
Micron Technology
MU
|
+$92.3M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$73.9M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$68.9M |
| 4 |
SoFi Technologies
SOFI
|
+$49.1M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$48.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$1.08B |
| 2 |
iShares MSCI Brazil ETF
EWZ
|
+$246M |
| 3 |
Meta Platforms (Facebook)
META
|
+$226M |
| 4 |
Amazon
AMZN
|
+$187M |
| 5 |
Apple
AAPL
|
+$184M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.46% |
| 2 | Financials | 0.11% |
| 3 | Healthcare | 0.03% |
| 4 | Communication Services | 0.03% |
| 5 | Consumer Staples | 0.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1901
Methode Electronics
MEI
$543M
| $1.75K | ﹤0.01% |
318
-280
| -47% | -$2.05K |
|
1902
John B. Sanfilippo & Son
JBSS
$949M
| $1.75K | ﹤0.01% |
22
-12
| -35% | -$924 |
|
1903
SkinHealth Systems
SKIN
$94.9M
| $1.74K | ﹤0.01% |
1,958
+950
| +94% | +$1.17K |
|
1904
HealthStream
HSTM
$793M
| $1.74K | ﹤0.01% |
84
-66
| -44% | -$1.41K |
|
1905
908 Devices
MASS
$293M
| $1.73K | ﹤0.01% |
282
-184
| -39% | -$1.15K |
|
1906
SIGA Technologies
SIGA
$223M
| $1.72K | ﹤0.01% |
322
-128
| -28% | -$798 |
|
|
EWCZ
1907
DELISTED
European Wax Center
EWCZ
| $1.72K | ﹤0.01% |
298
-224
| -43% | -$1.11K |
|
1908
Voyager Therapeutics
VYGR
$187M
| $1.72K | ﹤0.01% |
446
-192
| -30% | -$756 |
|
1909
Sprout Social
SPT
$455M
| $1.72K | ﹤0.01% |
302
-2
| -0.7% | -$15 |
|
1910
Marten Transport
MRTN
$1.33B
| $1.71K | ﹤0.01% |
+130
| New | +$1.67K |
|
1911
Emerson Electric
EMR
$82.9B
| $1.7K | ﹤0.01% |
+13
| New | +$1.87K |
|
1912
Marcus & Millichap
MMI
$1.15B
| $1.7K | ﹤0.01% |
64
-8
| -11% | -$211 |
|
1913
Rimini Street
RMNI
$408M
| $1.68K | ﹤0.01% |
512
-384
| -43% | -$1.33K |
|
|
ARDT
1914
Ardent Health
ARDT
$1.53B
| $1.68K | ﹤0.01% |
196
-208
| -51% | -$1.87K |
|
1915
Aviat Networks
AVNW
$262M
| $1.67K | ﹤0.01% |
74
-88
| -54% | -$2.1K |
|
|
WBTN
1916
WEBTOON Entertainment Inc
WBTN
$1.22B
| $1.67K | ﹤0.01% |
182
-120
| -40% | -$1.35K |
|
1917
N-able
NABL
$769M
| $1.67K | ﹤0.01% |
358
+296
| +477% | +$1.65K |
|
1918
Telos
TLS
$337M
| $1.67K | ﹤0.01% |
399
+36
| +10% | +$170 |
|
1919
Scansource
SCSC
$1.12B
| $1.67K | ﹤0.01% |
46
-4
| -8% | -$153 |
|
1920
Westrock Coffee
WEST
$741M
| $1.67K | ﹤0.01% |
392
-216
| -36% | -$964 |
|
1921
Anika Therapeutics
ANIK
$199M
| $1.65K | ﹤0.01% |
114
-104
| -48% | -$1.21K |
|
1922
Avanos Medical
AVNS
$1.17B
| $1.65K | ﹤0.01% |
118
-44
| -27% | -$593 |
|
1923
Escalade
ESCA
$257M
| $1.65K | ﹤0.01% |
96
-72
| -43% | -$1.09K |
|
1924
Pioneer Bancorp
PBFS
$445M
| $1.64K | ﹤0.01% |
118
-48
| -29% | -$671 |
|
1925
Ranpak Holdings
PACK
$553M
| $1.64K | ﹤0.01% |
460
-352
| -43% | -$1.73K |
|
Similar funds
Optiver Holding's Q1 2026 Portfolio in Review
As of Q1 2026, Optiver Holding held 2,853 positions worth $289B, up 7.7% from $269B the previous quarter. Its ten largest holdings account for 70% of the portfolio.
Optiver Holding deployed $33.8B of net new capital in Q1 2026, opening 414 new positions and adding to 922 existing holdings. Its largest new stake was State Street SPDR Dow Jones Industrial Average ETF Trust: 142,128 shares worth $65.8M.
By sector, the portfolio is most concentrated in Technology at 0.46% of assets, down from 0.66% a quarter earlier, followed by Financials and Healthcare.
On the sell side, the largest reduction was State Street SPDR S&P 500 ETF Trust, an estimated $1.08B trimmed.
- Optiver Holding's largest Q1 2026 buy was State Street SPDR Dow Jones Industrial Average ETF Trust: 142,128 shares worth $65.8M.
- Optiver Holding added most to Micron Technology in Q1 2026, an estimated $92.3M increase.
- Optiver Holding's biggest Q1 2026 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $1.08B.
- Optiver Holding fully exited iShares MSCI Brazil ETF in Q1 2026, selling an estimated $246M.
- Optiver Holding's ten largest holdings make up 70% of its $289B portfolio in Q1 2026.
- Optiver Holding opened 414 new positions and closed 564 in Q1 2026.
- Optiver Holding's portfolio value rose 7.7% quarter-over-quarter to $289B.
Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.