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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1001
CALL
CRISPR Therapeutics
CRSP
$4.68B
| $10.3M | 0.01% |
190,900
-113,200
| -37% | -$6.55M |
|
1002
CALL
SharkNinja
SN
$20.6B
| $10.3M | 0.01% |
136,800
+41,100
| +43% | +$2.89M |
|
1003
PUT
Globe Life
GL
$13.3B
| $10.3M | 0.01% |
124,700
+48,500
| +64% | +$4.02M |
|
1004
PUT
Evergy
EVRG
$20B
| $10.2M | 0.01% |
193,100
-500
| -0.3% | -$26.6K |
|
1005
Roku
ROKU
$21B
| $10.2M | 0.01% |
170,087
+109,092
| +179% | +$6.4M |
|
1006
PUT
WIX.com
WIX
$2.04B
| $10.2M | 0.01% |
64,000
-81,400
| -56% | -$11.7M |
|
1007
PUT
NXP Semiconductors
NXPI
$70B
| $10.2M | 0.01% |
37,800
-17,300
| -31% | -$4.46M |
|
1008
CALL
TD Synnex
SNX
$19.8B
| $10.2M | 0.01% |
88,000
+53,800
| +157% | +$6.57M |
|
1009
PUT
GraniteShares Bloomberg Commodity Broad Strategy No K-1 ETF
COMB
$136M
| $10.1M | 0.01% |
162,200
-8,200
| -5% | -$169K |
|
1010
PUT
LyondellBasell Industries
LYB
$19.9B
| $10.1M | 0.01% |
105,400
+7,500
| +8% | +$744K |
|
1011
Sarepta Therapeutics
SRPT
$1.68B
| $10.1M | 0.01% |
63,784
-2,996
| -4% | -$385K |
|
1012
CALL
Saia
SAIA
$11.3B
| $10.1M | 0.01% |
21,200
+11,300
| +114% | +$5.26M |
|
1013
PUT
AMC Entertainment Holdings
AMC
$2.04B
| $10M | 0.01% |
2,017,300
+678,300
| +51% | +$2.72M |
|
1014
CALL
Trip.com Group
TCOM
$27.1B
| $10M | 0.01% |
213,200
-22,600
| -10% | -$1.15M |
|
1015
PENN Entertainment
PENN
$2.71B
| $10M | 0.01% |
+517,446
| New | +$8.79M |
|
1016
PUT
ClearShares Piton Intermediate Fixed Income ETF
PIFI
$97.3M
| $10M | 0.01% |
509,500
-210,200
| -29% | -$19.2M |
|
|
CTRA
1017
CALL
DELISTED
Coterra Energy
CTRA
| $9.96M | 0.01% |
373,400
-14,700
| -4% | -$407K |
|
1018
PUT
Sunrun
RUN
$2.48B
| $9.95M | 0.01% |
839,000
-282,100
| -25% | -$3.46M |
|
1019
PUT
Vodafone
VOD
$35.1B
| $9.94M | 0.01% |
1,120,300
+109,600
| +11% | +$977K |
|
1020
CALL
Schwab US Broad Market ETF
SCHB
$42.7B
| $9.93M | 0.01% |
397,800
-20,700
| -5% | -$419K |
|
1021
PUT
Canadian Natural Resources
CNQ
$98B
| $9.91M | 0.01% |
278,500
-264,900
| -49% | -$9.97M |
|
1022
CALL
Williams-Sonoma
WSM
$25.7B
| $9.91M | 0.01% |
70,200
-79,800
| -53% | -$11.9M |
|
1023
CALL
General Mills
GIS
$19B
| $9.87M | 0.01% |
156,100
-301,800
| -66% | -$20.7M |
|
|
APLS
1024
CALL
DELISTED
Apellis Pharmaceuticals
APLS
| $9.86M | 0.01% |
257,100
+147,600
| +135% | +$6.68M |
|
1025
PUT
Avis
CAR
$5.62B
| $9.86M | 0.01% |
94,300
-7,000
| -7% | -$785K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.