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 |
Boeing
BA
|
+$55.8M |
| 2 |
Microsoft
MSFT
|
+$42.2M |
| 3 |
Pinduoduo
PDD
|
+$41.3M |
| 4 |
Apple
AAPL
|
+$32M |
| 5 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$28.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$95.2M |
| 2 |
Citigroup
C
|
+$57.2M |
| 3 |
Pfizer
PFE
|
+$56.4M |
| 4 |
TSMC
TSM
|
+$39.7M |
| 5 |
Starbucks
SBUX
|
+$35.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.4% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.15% |
| 4 | Industrials | 0.13% |
| 5 | Financials | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2126
PUT
Dave & Buster's
PLAY
$343M
| $2.39M | ﹤0.01% |
70,300
-13,200
| -16% | -$450K |
|
2127
PUT
Match Group
MTCH
$8.84B
| $2.39M | ﹤0.01% |
63,200
-68,400
| -52% | -$2.39M |
|
2128
PUT
Ollie's Bargain Outlet
OLLI
$4.01B
| $2.39M | ﹤0.01% |
24,600
-4,700
| -16% | -$453K |
|
2129
CALL
Tidewater
TDW
$3.91B
| $2.39M | ﹤0.01% |
33,300
-3,400
| -9% | -$296K |
|
2130
PUT
Herbalife
HLF
$1.23B
| $2.39M | ﹤0.01% |
332,200
+57,700
| +21% | +$531K |
|
2131
PUT
Applied Industrial Technologies
AIT
$12.8B
| $2.39M | ﹤0.01% |
10,700
+9,300
| +664% | +$1.9M |
|
2132
PUT
Global E Online
GLBE
$6.08B
| $2.38M | ﹤0.01% |
62,000
-40,600
| -40% | -$1.43M |
|
2133
PUT
TORM
TRMD
$3.1B
| $2.38M | ﹤0.01% |
69,600
-11,500
| -14% | -$422K |
|
2134
CALL
Host Hotels & Resorts
HST
$16.8B
| $2.38M | ﹤0.01% |
135,100
+29,800
| +28% | +$518K |
|
2135
Vipshop
VIPS
$6.84B
| $2.37M | ﹤0.01% |
150,433
+112,750
| +299% | +$1.51M |
|
2136
CALL
FIGS
FIGS
$1.59B
| $2.36M | ﹤0.01% |
345,400
-46,400
| -12% | -$270K |
|
|
HES
2137
CALL
DELISTED
Hess
HES
| $2.36M | ﹤0.01% |
17,400
-4,900
| -22% | -$682K |
|
2138
PUT
PACCAR
PCAR
$69.6B
| $2.36M | ﹤0.01% |
23,900
-2,500
| -9% | -$244K |
|
2139
CALL
Hawaiian Electric Industries
HE
$2.33B
| $2.35M | ﹤0.01% |
243,100
+145,700
| +150% | +$1.81M |
|
2140
CALL
Ambarella
AMBA
$2.99B
| $2.35M | ﹤0.01% |
41,700
+600
| +1% | +$31.9K |
|
2141
CALL
Blackstone Secured Lending
BXSL
$5.41B
| $2.35M | ﹤0.01% |
80,300
+1,400
| +2% | +$42.3K |
|
|
SKX
2142
DELISTED
Skechers
SKX
| $2.35M | ﹤0.01% |
35,043
+22,947
| +190% | +$1.51M |
|
2143
PUT
Magna International
MGA
$17.9B
| $2.34M | ﹤0.01% |
57,100
-10,300
| -15% | -$430K |
|
2144
CALL
Comstock Resources
CRK
$3.97B
| $2.34M | ﹤0.01% |
210,400
-79,500
| -27% | -$815K |
|
2145
CALL
California Resources
CRC
$4.75B
| $2.34M | ﹤0.01% |
44,600
+38,900
| +682% | +$1.97M |
|
2146
PUT
CoinShares ETF Trust CoinShares Bitcoin Mining ETF
WGMI
$247M
| $2.34M | ﹤0.01% |
123,900
+83,500
| +207% | +$1.65M |
|
2147
CALL
Manulife Financial
MFC
$72.6B
| $2.34M | ﹤0.01% |
79,100
-57,600
| -42% | -$1.55M |
|
|
VTLE
2148
PUT
DELISTED
Vital Energy
VTLE
| $2.33M | ﹤0.01% |
86,700
+56,400
| +186% | +$2.09M |
|
2149
PUT
ARKO Corp
ARKO
$890M
| $2.33M | ﹤0.01% |
332,000
+3,700
| +1% | +$23.4K |
|
|
TIGR
2150
CALL
UP Fintech Holding
TIGR
$845M
| $2.33M | ﹤0.01% |
436,200
+277,600
| +175% | +$1.11M |
|
Similar funds
Simplex Trading's Q3 2024 Portfolio in Review
As of Q3 2024, Simplex Trading held 9,964 positions worth $170B, up 5.3% from $162B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q3 2024 filing shows 1,185 new, 3,232 increased, 3,829 reduced and 1,476 closed positions. Its largest new stake was Boeing: 325,328 shares worth $49.5M. The largest sale was Broadcom, an estimated $95.2M.
By sector, the portfolio is most concentrated in Technology at 0.4% of assets, down from 0.53% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q3 2024 buy was Boeing: 325,328 shares worth $49.5M.
- Simplex Trading added most to Pinduoduo in Q3 2024, an estimated $41.3M increase.
- Simplex Trading's biggest Q3 2024 reduction was Citigroup, cutting an estimated $57.2M.
- Simplex Trading fully exited Broadcom in Q3 2024, selling an estimated $95.2M.
- Simplex Trading's ten largest holdings make up 50% of its $170B portfolio in Q3 2024.
- Simplex Trading opened 1,185 new positions and closed 1,476 in Q3 2024.
- Simplex Trading's portfolio value rose 5.3% quarter-over-quarter to $170B.
Based on Simplex Trading's 13F filing for Q3 2024, filed 8 Nov 2024.