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 | |
|---|---|---|---|---|---|---|
1926
MaxLinear
MXL
$6.49B
| $1.64K | ﹤0.01% |
94
+56
| +147% | +$1.01K |
|
|
RPC
1927
Ridgepost Capital
RPC
$927M
| $1.63K | ﹤0.01% |
224
| – | – |
|
1928
CTS Corp
CTS
$1.72B
| $1.62K | ﹤0.01% |
34
-8
| -19% | -$401 |
|
1929
Flexsteel Industries
FLXS
$306M
| $1.62K | ﹤0.01% |
+36
| New | +$1.67K |
|
1930
RLJ Lodging Trust
RLJ
$1.87B
| $1.62K | ﹤0.01% |
+218
| New | +$1.7K |
|
1931
Sana Biotechnology
SANA
$885M
| $1.62K | ﹤0.01% |
561
+52
| +10% | +$205 |
|
1932
Greene County Bancorp
GCBC
$562M
| $1.61K | ﹤0.01% |
72
-32
| -31% | -$726 |
|
1933
Viant Technology
DSP
$214M
| $1.61K | ﹤0.01% |
144
-128
| -47% | -$1.42K |
|
1934
Xponential Fitness
XPOF
$265M
| $1.61K | ﹤0.01% |
268
-208
| -44% | -$1.5K |
|
1935
Utah Medical Products
UTMD
$214M
| $1.61K | ﹤0.01% |
26
-8
| -24% | -$504 |
|
1936
Cerence
CRNC
$382M
| $1.61K | ﹤0.01% |
255
+89
| +54% | +$802 |
|
1937
Organogenesis Holdings
ORGO
$308M
| $1.6K | ﹤0.01% |
676
+120
| +22% | +$416 |
|
|
AGEN
1938
Agenus
AGEN
$249M
| $1.6K | ﹤0.01% |
478
-895
| -65% | -$2.97K |
|
1939
Medallion Financial
MFIN
$226M
| $1.59K | ﹤0.01% |
186
-160
| -46% | -$1.57K |
|
|
PAL
1940
Proficient Auto Logistics
PAL
$190M
| $1.59K | ﹤0.01% |
234
-136
| -37% | -$1.12K |
|
1941
Concrete Pumping Holdings
BBCP
$531M
| $1.57K | ﹤0.01% |
220
-168
| -43% | -$1.12K |
|
|
LNKB
1942
DELISTED
LINKBANCORP
LNKB
| $1.57K | ﹤0.01% |
188
-136
| -42% | -$1.18K |
|
1943
Jack in the Box
JACK
$278M
| $1.57K | ﹤0.01% |
162
-38
| -19% | -$672 |
|
1944
Quanterix
QTRX
$173M
| $1.57K | ﹤0.01% |
445
+100
| +29% | +$584 |
|
1945
First Internet Bancorp
INBK
$231M
| $1.55K | ﹤0.01% |
76
-72
| -49% | -$1.5K |
|
|
OSG
1946
Octave Specialty Group
OSG
$252M
| $1.54K | ﹤0.01% |
332
-38
| -10% | -$218 |
|
1947
InnovAge Holding
INNV
$1.57B
| $1.54K | ﹤0.01% |
192
-16
| -8% | -$119 |
|
1948
LiveRamp
RAMP
$2.29B
| $1.54K | ﹤0.01% |
+58
| New | +$1.52K |
|
1949
Byrna Technologies
BYRN
$80.3M
| $1.53K | ﹤0.01% |
167
+95
| +132% | +$1.25K |
|
1950
Dream Finders Homes
DFH
$1.46B
| $1.53K | ﹤0.01% |
110
+8
| +8% | +$142 |
|
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.