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 | |
|---|---|---|---|---|---|---|
1126
CALL
Targa Resources
TRGP
$61B
| $8.47M | 0.01% |
65,800
-30,100
| -31% | -$3.52M |
|
1127
PUT
Southern Copper
SCCO
$143B
| $8.46M | 0.01% |
83,841
+22,462
| +37% | +$2.39M |
|
1128
CALL
Cytokinetics
CYTK
$11.1B
| $8.39M | 0.01% |
154,900
-262,100
| -63% | -$15.8M |
|
1129
CALL
Trane Technologies
TT
$107B
| $8.39M | 0.01% |
25,500
-7,800
| -23% | -$2.48M |
|
1130
PUT
Post Holdings
POST
$4.14B
| $8.37M | 0.01% |
80,400
-31,400
| -28% | -$3.27M |
|
1131
CALL
Elbit Systems
ESLT
$38.6B
| $8.35M | 0.01% |
47,300
-500
| -1% | -$97.5K |
|
|
1132
State Street Energy Select Sector SPDR ETF
XLE
$39.5B
| $8.35M | 0.01% |
183,178
-2,028,754
| -92% | -$94.5M |
|
|
FLG
1133
PUT
Flagstar Bank National Association
FLG
$5.81B
| $8.34M | 0.01% |
863,600
-65,900
| -7% | -$637K |
|
1134
CALL
Pan American Silver
PAAS
$18.8B
| $8.33M | 0.01% |
420,300
-595,900
| -59% | -$11.7M |
|
1135
PUT
United Therapeutics
UTHR
$26.5B
| $8.31M | 0.01% |
26,100
-20,700
| -44% | -$5.48M |
|
1136
CALL
Vulcan Materials
VMC
$36.4B
| $8.3M | 0.01% |
33,400
-7,800
| -19% | -$2.02M |
|
1137
CALL
Motorola Solutions
MSI
$68.5B
| $8.3M | 0.01% |
21,500
-7,900
| -27% | -$2.85M |
|
1138
PUT
Academy Sports + Outdoors
ASO
$2.94B
| $8.3M | 0.01% |
155,800
-10,700
| -6% | -$608K |
|
1139
PUT
iShares Gold Trust
IAU
$63.3B
| $8.29M | 0.01% |
188,600
+74,500
| +65% | +$3.29M |
|
1140
PUT
Williams Companies
WMB
$91.3B
| $8.24M | 0.01% |
194,000
+19,100
| +11% | +$766K |
|
1141
CALL
F5
FFIV
$22.1B
| $8.18M | 0.01% |
47,500
+28,600
| +151% | +$5M |
|
1142
Energy Transfer Partners
ET
$70.2B
| $8.17M | 0.01% |
503,554
-42,865
| -8% | -$674K |
|
1143
Vale
VALE
$63.4B
| $8.14M | 0.01% |
728,549
-269,066
| -27% | -$3.24M |
|
1144
PUT
International Flavors & Fragrances
IFF
$19.4B
| $8.12M | 0.01% |
85,300
-62,200
| -42% | -$5.7M |
|
1145
PUT
Veeva Systems
VEEV
$30.2B
| $8.11M | 0.01% |
44,300
-16,400
| -27% | -$3.26M |
|
1146
CALL
LyondellBasell Industries
LYB
$19.7B
| $8.1M | 0.01% |
84,700
-12,500
| -13% | -$1.24M |
|
1147
PUT
CRISPR Therapeutics
CRSP
$4.63B
| $8.1M | 0.01% |
150,000
-78,300
| -34% | -$4.53M |
|
1148
PUT
Stanley Black & Decker
SWK
$14.2B
| $8.09M | 0.01% |
101,300
-1,600
| -2% | -$141K |
|
1149
PUT
Oneok
OKE
$59B
| $8.06M | 0.01% |
98,900
-44,400
| -31% | -$3.55M |
|
1150
CALL
Nutrien
NTR
$32.6B
| $8.06M | 0.01% |
158,300
-128,100
| -45% | -$7.01M |
|
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.