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 | |
|---|---|---|---|---|---|---|
|
UDMY
1626
DELISTED
Udemy
UDMY
| $3.22K | ﹤0.01% |
696
+144
| +26% | +$710 |
|
1627
Avita Medical
RCEL
$142M
| $3.19K | ﹤0.01% |
+862
| New | +$3.62K |
|
1628
Addus HomeCare
ADUS
$2.14B
| $3.18K | ﹤0.01% |
34
+24
| +240% | +$2.54K |
|
1629
Amerant Bancorp
AMTB
$1.12B
| $3.17K | ﹤0.01% |
144
-88
| -38% | -$1.89K |
|
1630
Climb Global Solutions
CLMB
$473M
| $3.17K | ﹤0.01% |
160
+24
| +18% | +$622 |
|
1631
Tiptree Inc
TIPT
$668M
| $3.16K | ﹤0.01% |
187
+59
| +46% | +$1.01K |
|
1632
Horace Mann Educators
HMN
$2.1B
| $3.16K | ﹤0.01% |
74
-46
| -38% | -$1.99K |
|
|
UHT
1633
Universal Health Realty Income Trust
UHT
$608M
| $3.16K | ﹤0.01% |
78
-24
| -24% | -$995 |
|
1634
Myriad Genetics
MYGN
$530M
| $3.15K | ﹤0.01% |
700
+592
| +548% | +$3.08K |
|
|
PRSU
1635
Pursuit Attractions and Hospitality Inc
PRSU
$1.43B
| $3.15K | ﹤0.01% |
86
-14
| -14% | -$499 |
|
1636
MiMedx Group
MDXG
$626M
| $3.14K | ﹤0.01% |
796
+592
| +290% | +$2.98K |
|
1637
Luxfer Holdings
LXFR
$460M
| $3.14K | ﹤0.01% |
258
+32
| +14% | +$445 |
|
1638
Ouster
OUST
$2.29B
| $3.14K | ﹤0.01% |
171
+140
| +452% | +$3.05K |
|
1639
Arvinas
ARVN
$518M
| $3.14K | ﹤0.01% |
296
+44
| +17% | +$545 |
|
1640
ASP Isotopes
ASPI
$487M
| $3.14K | ﹤0.01% |
710
+301
| +74% | +$1.78K |
|
|
ILPT
1641
Industrial Logistics Properties Trust
ILPT
$613M
| $3.13K | ﹤0.01% |
552
+64
| +13% | +$372 |
|
1642
Phathom Pharmaceuticals
PHAT
$912M
| $3.13K | ﹤0.01% |
282
+84
| +42% | +$1.06K |
|
1643
F&G Annuities & Life
FG
$3.93B
| $3.11K | ﹤0.01% |
123
+1
| +0.8% | +$26 |
|
1644
Ooma
OOMA
$550M
| $3.11K | ﹤0.01% |
214
-176
| -45% | -$2.21K |
|
|
ONTF
1645
DELISTED
ON24
ONTF
| $3.11K | ﹤0.01% |
384
-208
| -35% | -$1.66K |
|
1646
RPC Inc
RES
$1.24B
| $3.11K | ﹤0.01% |
439
-241
| -35% | -$1.5K |
|
1647
Prime Medicine
PRME
$533M
| $3.1K | ﹤0.01% |
892
+732
| +458% | +$2.79K |
|
1648
Frontier Group Holdings
ULCC
$1.34B
| $3.1K | ﹤0.01% |
879
+152
| +21% | +$695 |
|
|
DHIL
1649
DELISTED
Diamond Hill
DHIL
| $3.1K | ﹤0.01% |
18
| – | – |
|
1650
Peapack-Gladstone Financial
PGC
$822M
| $3.1K | ﹤0.01% |
88
-40
| -31% | -$1.3K |
|
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.