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 | |
|---|---|---|---|---|---|---|
1601
Sinclair Inc
SBGI
$974M
| $3.39K | ﹤0.01% |
262
-64
| -20% | -$930 |
|
1602
Talos Energy
TALO
$2.49B
| $3.37K | ﹤0.01% |
+214
| New | +$2.75K |
|
1603
First Bancorp
FNLC
$394M
| $3.36K | ﹤0.01% |
120
-56
| -32% | -$1.55K |
|
1604
Safe Bulkers
SB
$781M
| $3.35K | ﹤0.01% |
530
-456
| -46% | -$2.66K |
|
1605
ACM Research
ACMR
$5.83B
| $3.35K | ﹤0.01% |
+85
| New | +$4.51K |
|
|
XRN
1606
Chiron Real Estate Inc
XRN
$544M
| $3.34K | ﹤0.01% |
101
| – | – |
|
1607
Neuropace
NPCE
$505M
| $3.34K | ﹤0.01% |
254
-16
| -6% | -$240 |
|
1608
Ranger Energy Services
RNGR
$373M
| $3.33K | ﹤0.01% |
194
-112
| -37% | -$1.81K |
|
1609
Custom Truck One Source
CTOS
$2.47B
| $3.32K | ﹤0.01% |
506
+160
| +46% | +$1.05K |
|
1610
Kodak
KODK
$806M
| $3.31K | ﹤0.01% |
366
+78
| +27% | +$595 |
|
1611
Ponce Financial Group
PDLB
$489M
| $3.31K | ﹤0.01% |
198
+40
| +25% | +$659 |
|
1612
SI-BONE Inc
SIBN
$737M
| $3.31K | ﹤0.01% |
262
+176
| +205% | +$2.75K |
|
1613
Real Brokerage
REAX
$368M
| $3.3K | ﹤0.01% |
1,320
+464
| +54% | +$1.4K |
|
1614
Northeast Community Bancorp
NECB
$368M
| $3.28K | ﹤0.01% |
138
+24
| +21% | +$566 |
|
1615
Weis Markets
WMK
$1.82B
| $3.28K | ﹤0.01% |
48
+40
| +500% | +$2.73K |
|
1616
Quanex
NX
$854M
| $3.27K | ﹤0.01% |
182
-244
| -57% | -$4.61K |
|
1617
EverQuote
EVER
$886M
| $3.27K | ﹤0.01% |
212
+24
| +13% | +$454 |
|
1618
Enanta Pharmaceuticals
ENTA
$372M
| $3.26K | ﹤0.01% |
258
| – | – |
|
1619
Entrada Therapeutics
TRDA
$227M
| $3.26K | ﹤0.01% |
258
-88
| -25% | -$1.01K |
|
1620
ADC Therapeutics
ADCT
$146M
| $3.25K | ﹤0.01% |
866
+280
| +48% | +$1.1K |
|
1621
Flywire
FLYW
$1.96B
| $3.24K | ﹤0.01% |
278
+250
| +893% | +$3.15K |
|
1622
Park Aerospace
PKE
$745M
| $3.23K | ﹤0.01% |
118
+26
| +28% | +$666 |
|
1623
Regional Management Corp
RM
$384M
| $3.23K | ﹤0.01% |
100
+16
| +19% | +$556 |
|
1624
Hallador Energy
HNRG
$718M
| $3.22K | ﹤0.01% |
198
+79
| +66% | +$1.47K |
|
1625
Plumas Bancorp
PLBC
$427M
| $3.22K | ﹤0.01% |
66
-40
| -38% | -$1.97K |
|
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.