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 | |
|---|---|---|---|---|---|---|
3076
OppFi
OPFI
$804M
| $591K | ﹤0.01% |
76,709
+45,449
| +145% | +$416K |
|
3077
Spectrum Brands
SPB
$2.04B
| $590K | ﹤0.01% |
+8,011
| New | +$571K |
|
3078
CALL
The Honest Company
HNST
$409M
| $590K | ﹤0.01% |
200,800
-87,600
| -30% | -$225K |
|
3079
CALL
VSE Corp
VSEC
$5.37B
| $590K | ﹤0.01% |
+3,200
| New | +$651K |
|
3080
PUT
G-III Apparel Group
GIII
$1.55B
| $590K | ﹤0.01% |
21,300
-22,800
| -52% | -$667K |
|
3081
Global E Online
GLBE
$6.7B
| $590K | ﹤0.01% |
19,117
+1,228
| +7% | +$43.2K |
|
3082
PUT
Ventas
VTR
$44.7B
| $589K | ﹤0.01% |
7,200
-14,400
| -67% | -$1.18M |
|
3083
PUT
Howard Hughes
HHH
$3.87B
| $588K | ﹤0.01% |
9,300
-6,000
| -39% | -$450K |
|
3084
CALL
Equinix
EQIX
$103B
| $588K | ﹤0.01% |
600
-500
| -45% | -$445K |
|
3085
CALL
JFrog
FROG
$9.5B
| $587K | ﹤0.01% |
12,500
-23,400
| -65% | -$1.15M |
|
|
BLSH
3086
CALL
Bullish
BLSH
$3.43B
| $586K | ﹤0.01% |
16,400
-113,900
| -87% | -$3.99M |
|
3087
CALL
Jacobs Solutions
J
$15.7B
| $585K | ﹤0.01% |
4,600
+2,800
| +156% | +$381K |
|
3088
PUT
Invesco
IVZ
$13B
| $585K | ﹤0.01% |
24,100
+200
| +0.8% | +$5.23K |
|
3089
PUT
ProPetro Holding
PUMP
$1.33B
| $585K | ﹤0.01% |
40,600
+21,400
| +111% | +$256K |
|
3090
PUT
abrdn Physical Gold Shares ETF
SGOL
$7.01B
| $585K | ﹤0.01% |
13,100
-110,600
| -89% | -$5.14M |
|
|
BZUN
3091
PUT
Baozun
BZUN
$173M
| $584K | ﹤0.01% |
244,500
+157,300
| +180% | +$409K |
|
3092
TMC The Metals Company
TMC
$1.57B
| $584K | ﹤0.01% |
125,091
+82,201
| +192% | +$530K |
|
3093
Ally Financial
ALLY
$13.2B
| $584K | ﹤0.01% |
14,890
+14,440
| +3,209% | +$594K |
|
3094
CALL
Applied Industrial Technologies
AIT
$12.6B
| $584K | ﹤0.01% |
+2,200
| New | +$599K |
|
3095
iShares MSCI Europe Financials ETF
EUFN
$4.14B
| $584K | ﹤0.01% |
16,748
-18,128
| -52% | -$663K |
|
3096
Tidewater
TDW
$3.65B
| $583K | ﹤0.01% |
+6,982
| New | +$486K |
|
3097
CALL
Omega Healthcare
OHI
$15B
| $583K | ﹤0.01% |
13,300
-200
| -1% | -$9.13K |
|
3098
CALL
HF Sinclair
DINO
$16.7B
| $580K | ﹤0.01% |
9,300
+3,600
| +63% | +$195K |
|
3099
Star Bulk Carriers
SBLK
$3.25B
| $579K | ﹤0.01% |
25,194
-1,448
| -5% | -$33K |
|
3100
PUT
ProShares UltraShort Health Care
RXD
$3.21M
| $578K | ﹤0.01% |
8,000
-19,650
| -71% | -$362K |
|
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.