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 | |
|---|---|---|---|---|---|---|
1026
CALL
BJs Wholesale Club
BJ
$11.8B
| $9.86M | 0.01% |
112,200
+38,600
| +52% | +$3.13M |
|
1027
CALL
Fox Class B
FOX
$20.8B
| $9.84M | 0.01% |
286,400
-87,500
| -23% | -$2.64M |
|
1028
PUT
Automatic Data Processing
ADP
$99B
| $9.81M | 0.01% |
41,100
-8,800
| -18% | -$2.16M |
|
1029
PUT
United States Oil Fund
USO
$2.46B
| $9.8M | 0.01% |
123,100
-350,000
| -74% | -$27.2M |
|
1030
CALL
Manhattan Associates
MANH
$8.96B
| $9.74M | 0.01% |
39,500
+34,100
| +631% | +$7.73M |
|
1031
CALL
PPG Industries
PPG
$25.6B
| $9.73M | 0.01% |
77,300
+18,900
| +32% | +$2.5M |
|
|
PARA
1032
DELISTED
Paramount Global Class B
PARA
| $9.73M | 0.01% |
936,310
+180,294
| +24% | +$2.11M |
|
1033
PUT
Insulet
PODD
$11B
| $9.73M | 0.01% |
48,200
-29,400
| -38% | -$5.3M |
|
1034
PUT
BHP
BHP
$211B
| $9.71M | 0.01% |
170,000
-60,900
| -26% | -$3.54M |
|
1035
PUT
Tapestry
TPR
$28.1B
| $9.68M | 0.01% |
226,200
-463,200
| -67% | -$19.4M |
|
1036
CALL
Jabil
JBL
$32.8B
| $9.67M | 0.01% |
88,900
-62,200
| -41% | -$7.54M |
|
1037
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$106M
| $9.65M | 0.01% |
409,700
-204,900
| -33% | -$4.99M |
|
1038
CALL
Centene
CNC
$31.6B
| $9.65M | 0.01% |
145,500
+29,300
| +25% | +$2.13M |
|
1039
Best Buy
BBY
$17.9B
| $9.64M | 0.01% |
114,394
+59,891
| +110% | +$4.75M |
|
1040
PUT
Cenovus Energy
CVE
$55.5B
| $9.63M | 0.01% |
489,900
+167,800
| +52% | +$3.39M |
|
1041
CALL
Fastenal
FAST
$53.5B
| $9.6M | 0.01% |
305,400
+64,200
| +27% | +$2.17M |
|
1042
CALL
Norfolk Southern
NSC
$78.5B
| $9.57M | 0.01% |
44,600
-1,800
| -4% | -$418K |
|
1043
CALL
Unilever
UL
$131B
| $9.57M | 0.01% |
154,667
+19,467
| +14% | +$1.15M |
|
|
GRMN
1044
CALL
Garmin
GRMN
$46.8B
| $9.55M | 0.01% |
58,600
-10,100
| -15% | -$1.59M |
|
1045
CALL
Fluor
FLR
$7.38B
| $9.52M | 0.01% |
218,700
+50,400
| +30% | +$2.1M |
|
1046
CALL
PG&E
PCG
$47.5B
| $9.51M | 0.01% |
544,900
+236,500
| +77% | +$4.16M |
|
1047
PUT
Emerson Electric
EMR
$82.2B
| $9.49M | 0.01% |
86,200
-103,600
| -55% | -$11.5M |
|
1048
PUT
Zoetis
ZTS
$31.6B
| $9.48M | 0.01% |
54,700
+26,100
| +91% | +$4.34M |
|
|
EDR
1049
CALL
DELISTED
Endeavor Group Holdings, Inc.
EDR
| $9.48M | 0.01% |
350,600
-427,300
| -55% | -$11.4M |
|
1050
CALL
Consolidated Edison
ED
$41.9B
| $9.41M | 0.01% |
105,300
+21,100
| +25% | +$1.96M |
|
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.