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 | |
|---|---|---|---|---|---|---|
1826
CALL
TAL Education Group
TAL
$5.71B
| $3.04M | ﹤0.01% |
284,900
-21,700
| -7% | -$256K |
|
1827
CALL
JPMorgan Inflation Managed Bond ETF
JCPI
$865M
| $3.04M | ﹤0.01% |
54,700
+25,700
| +89% | +$1.19M |
|
1828
CALL
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$263M
| $3.03M | ﹤0.01% |
47,900
+17,800
| +59% | +$1.07M |
|
1829
PUT
Modine Manufacturing
MOD
$12.8B
| $3.02M | ﹤0.01% |
30,200
-400
| -1% | -$38.4K |
|
|
NVMI
1830
CALL
Nova
NVMI
$13.9B
| $3.02M | ﹤0.01% |
12,900
+3,800
| +42% | +$752K |
|
1831
CALL
Valaris
VAL
$5.51B
| $3.02M | ﹤0.01% |
40,600
+14,600
| +56% | +$1.06M |
|
1832
PUT
Copart
CPRT
$25.9B
| $3.02M | ﹤0.01% |
55,800
-166,600
| -75% | -$9.09M |
|
1833
Ionis Pharmaceuticals
IONS
$9.35B
| $3.02M | ﹤0.01% |
63,347
+54,817
| +643% | +$2.25M |
|
1834
PUT
Global X S&P 500 Tail Risk ETF
XTR
$4.77M
| $3.02M | ﹤0.01% |
46,100
+44,600
| +2,973% | +$1.33M |
|
1835
CALL
Comstock Resources
CRK
$3.97B
| $3.01M | ﹤0.01% |
289,900
+122,400
| +73% | +$1.28M |
|
1836
PUT
Lemonade
LMND
$4.62B
| $3.01M | ﹤0.01% |
182,300
-70,700
| -28% | -$1.18M |
|
|
OKLO
1837
PUT
Oklo
OKLO
$7B
| $3M | ﹤0.01% |
+353,700
| New | +$3.98M |
|
1838
CALL
Invesco CurrencyShares Swiss Franc Trust
FXF
$409M
| $2.99M | ﹤0.01% |
30,200
+27,500
| +1,019% | +$2.7M |
|
1839
CALL
Travelers Companies
TRV
$80.8B
| $2.99M | ﹤0.01% |
14,700
-17,200
| -54% | -$3.7M |
|
1840
CALL
Cheesecake Factory
CAKE
$4.21B
| $2.99M | ﹤0.01% |
76,000
+30,600
| +67% | +$1.13M |
|
1841
CALL
MSCI
MSCI
$40B
| $2.99M | ﹤0.01% |
6,200
-500
| -7% | -$248K |
|
1842
CALL
American Superconductor
AMSC
$1.48B
| $2.98M | ﹤0.01% |
127,400
+17,300
| +16% | +$286K |
|
|
VSXY
1843
PUT
Victoria's Secret
VSXY
$6.64B
| $2.98M | ﹤0.01% |
168,400
-8,700
| -5% | -$166K |
|
1844
CALL
Sempra
SRE
$60.8B
| $2.97M | ﹤0.01% |
39,100
+22,000
| +129% | +$1.63M |
|
|
CIVI
1845
PUT
DELISTED
Civitas Resources
CIVI
| $2.96M | ﹤0.01% |
42,900
+13,500
| +46% | +$977K |
|
1846
Scotiabank
BNS
$106B
| $2.96M | ﹤0.01% |
+64,682
| New | +$3.06M |
|
1847
PUT
O'Reilly Automotive
ORLY
$72.4B
| $2.96M | ﹤0.01% |
42,000
-112,500
| -73% | -$7.78M |
|
1848
CALL
Cracker Barrel
CBRL
$1.2B
| $2.95M | ﹤0.01% |
70,000
+19,300
| +38% | +$1.04M |
|
1849
CALL
Thor Industries
THO
$3.99B
| $2.94M | ﹤0.01% |
31,500
-20,600
| -40% | -$2.06M |
|
1850
CALL
Vanguard ESG US Corporate Bond ETF
VCEB
$1.18B
| $2.94M | ﹤0.01% |
30,500
+14,600
| +92% | +$902K |
|
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.