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 | Miscellaneous | 98.27% |
| 2 | Technology | 0.53% |
| 3 | Consumer Discretionary | 0.29% |
| 4 | Healthcare | 0.21% |
| 5 | Financials | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
76
CALL
Salesforce
CRM
$213B
| $197M | 0.12% |
766,000
-88,200
| -10% | -$23.6M |
|
77
CALL
Coinbase
COIN
$48.7B
| $196M | 0.12% |
881,300
-488,700
| -36% | -$112M |
|
78
PUT
Berkshire Hathaway Class B
BRK.B
$1.08T
| $193M | 0.12% |
473,600
+98,200
| +26% | +$40.1M |
|
|
79
PUT
Citigroup
C
$231B
| $190M | 0.12% |
2,987,300
+98,400
| +3% | +$6.07M |
|
|
80
CALL
Pinduoduo
PDD
$117B
| $189M | 0.12% |
1,425,100
-751,200
| -35% | -$102M |
|
|
81
PUT
Salesforce
CRM
$213B
| $189M | 0.12% |
734,700
-115,000
| -14% | -$30.8M |
|
|
82
PUT
Intel
INTC
$506B
| $188M | 0.12% |
6,057,000
+1,942,000
| +47% | +$63.6M |
|
83
PUT
Walmart Inc
WMT
$850B
| $186M | 0.11% |
2,742,600
+833,800
| +44% | +$52.5M |
|
84
PUT
CrowdStrike
CRWD
$218B
| $180M | 0.11% |
2,037,200
-655,600
| -24% | -$54.5M |
|
85
PUT
Uber
UBER
$155B
| $180M | 0.11% |
2,471,000
-564,300
| -19% | -$39.2M |
|
|
86
CALL
Uber
UBER
$155B
| $170M | 0.11% |
2,343,900
-308,800
| -12% | -$21.5M |
|
87
CALL
Oracle
ORCL
$457B
| $167M | 0.1% |
1,180,300
-427,800
| -27% | -$53.1M |
|
88
CALL
Adobe
ADBE
$106B
| $165M | 0.1% |
297,700
-233,300
| -44% | -$113M |
|
89
PUT
Arista Networks
ANET
$244B
| $163M | 0.1% |
1,866,000
+897,600
| +93% | +$66.7M |
|
|
90
PUT
Pfizer
PFE
$162B
| $162M | 0.1% |
5,806,100
-914,300
| -14% | -$25.2M |
|
91
PUT
iShares Silver Trust
SLV
$32.2B
| $161M | 0.1% |
6,761,100
+3,684,700
| +120% | +$96.9M |
|
92
CALL
Goldman Sachs
GS
$302B
| $161M | 0.1% |
355,200
-75,500
| -18% | -$33.1M |
|
93
PUT
First Solar
FSLR
$22B
| $160M | 0.1% |
708,800
+117,100
| +20% | +$25.5M |
|
|
94
CALL
Intel
INTC
$506B
| $159M | 0.1% |
5,122,500
+959,500
| +23% | +$31.4M |
|
95
CALL
Arm
ARM
$269B
| $158M | 0.1% |
963,700
-582,100
| -38% | -$72.4M |
|
96
CALL
Direxion Daily Technology Bull 3x ETF
TECL
$6B
| $156M | 0.1% |
2,775,400
-212,700
| -7% | -$17.2M |
|
97
PUT
UnitedHealth
UNH
$356B
| $155M | 0.1% |
305,300
+51,000
| +20% | +$25M |
|
98
PUT
Walt Disney
DIS
$182B
| $151M | 0.09% |
1,521,400
-420,200
| -22% | -$45.2M |
|
99
CALL
Visa
V
$700B
| $151M | 0.09% |
575,300
-89,100
| -13% | -$24.4M |
|
100
CALL
Home Depot
HD
$320B
| $151M | 0.09% |
437,200
+78,600
| +22% | +$26.8M |
|
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's Q2 2024 filing shows 1,358 new, 3,196 increased, 4,061 reduced and 1,431 closed positions. Its largest new stake was Citigroup: 1,213,247 shares worth $77M. The largest sale was State Street Energy Select Sector SPDR ETF, an estimated $94.5M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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.