Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2926
PUT
Fiverr
FVRR
$331M
| $678K | ﹤0.01% |
67,700
-105,400
| -61% | -$1.45M |
|
2927
CALL
Liberty Global Class C
LBTYK
$3.5B
| $678K | ﹤0.01% |
56,900
-66,500
| -54% | -$762K |
|
2928
KLA
KLAC
$222B
| $676K | ﹤0.01% |
+4,590
| New | +$672K |
|
2929
CALL
Invesco
IVZ
$12.4B
| $675K | ﹤0.01% |
27,800
-380,400
| -93% | -$9.95M |
|
2930
CALL
Corsair Gaming
CRSR
$1.1B
| $674K | ﹤0.01% |
121,500
+42,200
| +53% | +$233K |
|
2931
PUT
Ormat Technologies
ORA
$5.8B
| $672K | ﹤0.01% |
6,000
+3,100
| +107% | +$360K |
|
2932
PUT
Vanguard Total International Stock ETF
VXUS
$151B
| $671K | ﹤0.01% |
8,700
+7,700
| +770% | +$611K |
|
2933
EOG Resources
EOG
$77.7B
| $670K | ﹤0.01% |
4,636
-2,413
| -34% | -$293K |
|
2934
CALL
Huazhu Hotels Group
HTHT
$13.3B
| $669K | ﹤0.01% |
13,300
+13,200
| +13,200% | +$673K |
|
2935
Precigen
PGEN
$1.94B
| $668K | ﹤0.01% |
172,660
-7,503
| -4% | -$30.8K |
|
2936
CALL
Albertsons Companies
ACI
$5.85B
| $668K | ﹤0.01% |
39,200
-222,400
| -85% | -$3.86M |
|
|
2937
CALL
Fiverr
FVRR
$331M
| $667K | ﹤0.01% |
66,600
+42,000
| +171% | +$577K |
|
2938
PUT
Rithm Capital
RITM
$5.58B
| $666K | ﹤0.01% |
70,300
-368,300
| -84% | -$3.85M |
|
2939
Invitation Homes
INVH
$17.9B
| $664K | ﹤0.01% |
+26,711
| New | +$700K |
|
2940
PUT
Antero Midstream
AM
$10.2B
| $663K | ﹤0.01% |
29,100
-14,100
| -33% | -$291K |
|
2941
CALL
CNX Resources
CNX
$4.91B
| $663K | ﹤0.01% |
17,200
-7,000
| -29% | -$273K |
|
|
SVM
2942
PUT
Silvercorp Metals
SVM
$2.02B
| $662K | ﹤0.01% |
61,600
-10,300
| -14% | -$113K |
|
2943
PUT
Corteva
CTVA
$60.5B
| $661K | ﹤0.01% |
7,900
+200
| +3% | +$15.1K |
|
2944
PUT
Norfolk Southern
NSC
$75.4B
| $660K | ﹤0.01% |
2,300
-5,600
| -71% | -$1.66M |
|
2945
PUT
Vanguard FTSE Developed Markets ETF
VEA
$223B
| $660K | ﹤0.01% |
10,300
+5,800
| +129% | +$383K |
|
2946
PUT
Kaspi.kz JSC
KSPI
$16.6B
| $659K | ﹤0.01% |
8,900
+2,000
| +29% | +$151K |
|
|
WBI
2947
PUT
WaterBridge Infrastructure LLC
WBI
$1.53B
| $659K | ﹤0.01% |
+24,600
| New | +$586K |
|
2948
CALL
Teradata
TDC
$2.88B
| $659K | ﹤0.01% |
25,700
+16,300
| +173% | +$476K |
|
2949
CALL
Distribution Solutions Group
DSGR
$1.6B
| $659K | ﹤0.01% |
+25,100
| New | +$702K |
|
|
SKE
2950
Skeena Resources
SKE
$3.19B
| $658K | ﹤0.01% |
22,136
-61,963
| -74% | -$1.9M |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.