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 | |
|---|---|---|---|---|---|---|
901
CALL
Ross Stores
ROST
$74.5B
| $12M | 0.01% |
82,700
-60,800
| -42% | -$8.41M |
|
902
SoFi Technologies
SOFI
$21.4B
| $12M | 0.01% |
1,817,798
-288,581
| -14% | -$2.03M |
|
903
PUT
Clorox
CLX
$11.3B
| $12M | 0.01% |
87,800
-18,900
| -18% | -$2.62M |
|
904
CALL
Canadian Pacific Kansas City
CP
$82B
| $12M | 0.01% |
151,900
+135,100
| +804% | +$11M |
|
905
PUT
SentinelOne
S
$5.96B
| $12M | 0.01% |
568,100
-18,400
| -3% | -$377K |
|
906
CALL
Globe Life
GL
$13.3B
| $11.9M | 0.01% |
145,000
+137,000
| +1,713% | +$11.3M |
|
907
PUT
Aptiv
APTV
$11.9B
| $11.9M | 0.01% |
169,000
+18,300
| +12% | +$1.41M |
|
908
PUT
KLA
KLAC
$286B
| $11.9M | 0.01% |
144,000
-213,000
| -60% | -$15.7M |
|
909
CALL
Sony
SONY
$122B
| $11.9M | 0.01% |
698,000
-738,500
| -51% | -$12.2M |
|
910
PUT
McKesson
MCK
$96.5B
| $11.9M | 0.01% |
20,300
-22,100
| -52% | -$12.3M |
|
911
PUT
SAP
SAP
$171B
| $11.8M | 0.01% |
58,600
-15,500
| -21% | -$2.93M |
|
912
International Paper
IP
$20.1B
| $11.8M | 0.01% |
273,721
+211,508
| +340% | +$8.59M |
|
913
PUT
Dynatrace
DT
$11.8B
| $11.8M | 0.01% |
263,600
+101,700
| +63% | +$4.69M |
|
914
PUT
ResMed
RMD
$27.8B
| $11.8M | 0.01% |
61,500
-99,100
| -62% | -$20.1M |
|
915
CALL
Digital Realty Trust
DLR
$66.4B
| $11.8M | 0.01% |
77,400
-11,400
| -13% | -$1.64M |
|
916
PUT
Citizens Financial Group
CFG
$30.3B
| $11.7M | 0.01% |
324,200
-229,600
| -41% | -$8.01M |
|
917
CALL
Paychex
PAYX
$39.4B
| $11.7M | 0.01% |
98,400
-10,800
| -10% | -$1.32M |
|
918
PUT
PBF Energy
PBF
$7.33B
| $11.7M | 0.01% |
253,500
-28,000
| -10% | -$1.43M |
|
919
CALL
CleanSpark
CLSK
$4.01B
| $11.7M | 0.01% |
731,400
-504,000
| -41% | -$8.47M |
|
|
AXON
920
PUT
Axon Enterprise
AXON
$39.6B
| $11.7M | 0.01% |
39,600
+16,400
| +71% | +$4.89M |
|
921
PUT
Darling Ingredients
DAR
$10.1B
| $11.6M | 0.01% |
315,700
+40,400
| +15% | +$1.68M |
|
922
PUT
Ralph Lauren
RL
$22.1B
| $11.6M | 0.01% |
66,100
-45,700
| -41% | -$7.89M |
|
923
CALL
Zions Bancorporation
ZION
$10.1B
| $11.6M | 0.01% |
266,600
+8,300
| +3% | +$350K |
|
924
PUT
Kraft Heinz
KHC
$30.1B
| $11.5M | 0.01% |
358,400
-69,800
| -16% | -$2.49M |
|
925
CALL
Darden Restaurants
DRI
$22.2B
| $11.5M | 0.01% |
76,300
-21,800
| -22% | -$3.32M |
|
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.