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 | |
|---|---|---|---|---|---|---|
1126
PUT
BioMarin Pharmaceuticals
BMRN
$11.4B
| $8.7M | 0.01% |
123,800
+29,200
| +31% | +$2.44M |
|
1127
CALL
Rocket Companies
RKT
$37.5B
| $8.7M | 0.01% |
453,400
+184,100
| +68% | +$3.23M |
|
1128
CALL
Manhattan Associates
MANH
$9.13B
| $8.69M | 0.01% |
30,900
-8,600
| -22% | -$2.19M |
|
1129
PUT
Unilever
UL
$131B
| $8.66M | 0.01% |
118,489
+26,045
| +28% | +$1.8M |
|
1130
CALL
Cintas
CTAS
$82.3B
| $8.63M | 0.01% |
41,900
+37,100
| +773% | +$7.16M |
|
1131
PUT
M&T Bank
MTB
$36.1B
| $8.62M | 0.01% |
48,400
+10,800
| +29% | +$1.79M |
|
1132
PUT
General Mills
GIS
$19.2B
| $8.6M | 0.01% |
116,500
-83,300
| -42% | -$5.77M |
|
1133
PUT
Edwards Lifesciences
EW
$49.2B
| $8.6M | 0.01% |
130,300
-10,100
| -7% | -$734K |
|
1134
PUT
Enbridge
ENB
$124B
| $8.58M | 0.01% |
211,300
-53,100
| -20% | -$2.05M |
|
1135
PUT
Stellantis
STLA
$16.6B
| $8.58M | 0.01% |
610,600
-29,800
| -5% | -$506K |
|
1136
PUT
Hims & Hers Health
HIMS
$6.83B
| $8.56M | 0.01% |
465,000
-67,400
| -13% | -$1.21M |
|
1137
CALL
VICI Properties
VICI
$29.4B
| $8.56M | 0.01% |
257,000
+195,200
| +316% | +$6.18M |
|
1138
CALL
Western Alliance Bancorporation
WAL
$9.1B
| $8.55M | 0.01% |
98,900
-43,300
| -30% | -$3.33M |
|
1139
CALL
Kimberly-Clark
KMB
$36.3B
| $8.54M | 0.01% |
60,000
-34,900
| -37% | -$4.95M |
|
1140
PUT
Clean Harbors
CLH
$16.2B
| $8.53M | 0.01% |
35,300
+12,500
| +55% | +$2.94M |
|
|
EMBJ
1141
CALL
Embraer S.A. ADS
EMBJ
$11.7B
| $8.53M | 0.01% |
241,100
+168,300
| +231% | +$5.34M |
|
1142
PUT
Lucid Motors
LCID
$2.51B
| $8.49M | 0.01% |
240,430
-4,790
| -2% | -$167K |
|
1143
PUT
Bank OZK
OZK
$5.51B
| $8.48M | 0.01% |
197,200
-65,600
| -25% | -$2.79M |
|
1144
PUT
Axos Financial
AX
$5.51B
| $8.48M | 0.01% |
134,800
+41,800
| +45% | +$2.75M |
|
1145
PUT
Kenvue
KVUE
$36.9B
| $8.47M | 0.01% |
366,300
-128,800
| -26% | -$2.67M |
|
1146
PUT
Bath & Body Works
BBWI
$4.06B
| $8.47M | 0.01% |
265,400
+116,400
| +78% | +$3.86M |
|
1147
PUT
McCormick & Company Non-Voting
MKC
$13.7B
| $8.46M | 0.01% |
102,800
-89,700
| -47% | -$6.99M |
|
1148
PUT
Alnylam Pharmaceuticals
ALNY
$36.5B
| $8.41M | ﹤0.01% |
30,600
-58,700
| -66% | -$15.3M |
|
1149
PUT
Peloton Interactive
PTON
$2.67B
| $8.39M | ﹤0.01% |
1,793,700
-29,000
| -2% | -$114K |
|
1150
CALL
Baxter International
BAX
$11.7B
| $8.35M | ﹤0.01% |
219,900
+177,000
| +413% | +$6.5M |
|
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.