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 | |
|---|---|---|---|---|---|---|
2301
CALL
Camping World
CWH
$363M
| $1.95M | ﹤0.01% |
80,600
+15,600
| +24% | +$336K |
|
2302
Huntington Bancshares
HBAN
$35.1B
| $1.95M | ﹤0.01% |
132,586
-30,172
| -19% | -$428K |
|
2303
CALL
Brookfield
BN
$102B
| $1.95M | ﹤0.01% |
54,900
-18,900
| -26% | -$596K |
|
2304
Direxion Daily TSLA Bull 2X ETF
TSLL
$2.44B
| $1.95M | ﹤0.01% |
140,802
-178,552
| -56% | -$2.02M |
|
2305
CALL
GDS Holdings
GDS
$6.34B
| $1.94M | ﹤0.01% |
95,200
-28,200
| -23% | -$399K |
|
2306
PUT
Urban Outfitters
URBN
$5.99B
| $1.94M | ﹤0.01% |
50,700
+14,900
| +42% | +$605K |
|
2307
CALL
Aecom
ACM
$9.07B
| $1.94M | ﹤0.01% |
18,800
+10,100
| +116% | +$949K |
|
|
BBBY
2308
CALL
Bed Bath & Beyond
BBBY
$473M
| $1.93M | ﹤0.01% |
210,650
-99,220
| -32% | -$1.02M |
|
2309
PUT
Biohaven
BHVN
$2.16B
| $1.93M | ﹤0.01% |
38,600
+26,600
| +222% | +$1.03M |
|
2310
CALL
Canadian Solar
CSIQ
$906M
| $1.93M | ﹤0.01% |
115,000
+34,700
| +43% | +$507K |
|
|
VISN
2311
PUT
Vistance Networks Inc
VISN
$2.66B
| $1.92M | ﹤0.01% |
313,600
+269,000
| +603% | +$922K |
|
2312
Pinnacle West Capital
PNW
$12.9B
| $1.91M | ﹤0.01% |
21,599
+18,499
| +597% | +$1.58M |
|
2313
CALL
Reliance Steel & Aluminium
RS
$20.8B
| $1.91M | ﹤0.01% |
6,600
+1,700
| +35% | +$487K |
|
2314
PUT
CVR Partners
UAN
$1.3B
| $1.91M | ﹤0.01% |
28,400
-2,000
| -7% | -$145K |
|
2315
CALL
DHT Holdings
DHT
$2.97B
| $1.9M | ﹤0.01% |
172,300
+112,100
| +186% | +$1.24M |
|
2316
Darling Ingredients
DAR
$9.93B
| $1.9M | ﹤0.01% |
51,077
-94,388
| -65% | -$3.56M |
|
2317
APA Corp
APA
$12.8B
| $1.9M | ﹤0.01% |
+77,520
| New | +$2.18M |
|
2318
The Mosaic Company
MOS
$7.09B
| $1.9M | ﹤0.01% |
70,807
+21,771
| +44% | +$599K |
|
2319
Vital Farms
VITL
$558M
| $1.9M | ﹤0.01% |
54,088
+50,578
| +1,441% | +$1.79M |
|
2320
CALL
Atlas Energy Solutions
AESI
$1.49B
| $1.89M | ﹤0.01% |
86,900
-16,100
| -16% | -$333K |
|
2321
PUT
Hertz
HTZ
$572M
| $1.88M | ﹤0.01% |
570,700
-155,400
| -21% | -$543K |
|
2322
Advance Auto Parts
AAP
$3.37B
| $1.88M | ﹤0.01% |
+48,283
| New | +$2.56M |
|
2323
PUT
Eldorado Gold
EGO
$8.31B
| $1.88M | ﹤0.01% |
108,100
-10,400
| -9% | -$175K |
|
2324
CALL
Knight Transportation
KNX
$11.8B
| $1.88M | ﹤0.01% |
34,800
-223,500
| -87% | -$11.6M |
|
2325
Recursion Pharmaceuticals
RXRX
$1.57B
| $1.88M | ﹤0.01% |
284,713
+189,941
| +200% | +$1.36M |
|
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.