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 | |
|---|---|---|---|---|---|---|
426
PUT
Tenet Healthcare
THC
$16.8B
| $33.4M | 0.02% |
251,100
+18,100
| +8% | +$2.18M |
|
427
CALL
Altria Group
MO
$121B
| $33.1M | 0.02% |
726,300
+14,000
| +2% | +$621K |
|
428
CALL
BP
BP
$112B
| $32.9M | 0.02% |
910,400
+167,300
| +23% | +$6.27M |
|
429
CALL
Colgate-Palmolive
CL
$73.3B
| $32.8M | 0.02% |
338,000
-334,300
| -50% | -$30.8M |
|
430
Snowflake
SNOW
$92.8B
| $32.7M | 0.02% |
242,389
+136,459
| +129% | +$20.2M |
|
431
CALL
Mercado Libre
MELI
$91.2B
| $32.7M | 0.02% |
19,900
-3,800
| -16% | -$6M |
|
432
SPDR Gold Trust
GLD
$133B
| $32.7M | 0.02% |
+152,011
| New | +$32.9M |
|
433
PUT
Honeywell
HON
$73.8B
| $32.6M | 0.02% |
162,121
+63,766
| +65% | +$12.1M |
|
434
PUT
Estee Lauder
EL
$29.9B
| $32.6M | 0.02% |
448,500
+55,900
| +14% | +$7.33M |
|
435
CALL
ConocoPhillips
COP
$145B
| $32.5M | 0.02% |
284,200
-81,900
| -22% | -$9.95M |
|
436
Baidu
BIDU
$36.6B
| $32.5M | 0.02% |
375,303
-14,733
| -4% | -$1.48M |
|
437
CALL
Cleveland-Cliffs
CLF
$5.39B
| $32.3M | 0.02% |
2,097,100
+651,300
| +45% | +$11.7M |
|
|
438
PUT
GE Aerospace
GE
$354B
| $32.2M | 0.02% |
431,000
-353,879
| -45% | -$56.5M |
|
439
CALL
Stryker
SYK
$119B
| $32.1M | 0.02% |
94,300
+56,700
| +151% | +$19.2M |
|
440
CALL
Southwest Airlines
LUV
$23.3B
| $32.1M | 0.02% |
1,120,300
+363,500
| +48% | +$10.1M |
|
441
CALL
Synopsys
SNPS
$72.3B
| $32M | 0.02% |
53,700
-10,600
| -16% | -$5.99M |
|
442
CALL
Dow Inc
DOW
$22.5B
| $31.8M | 0.02% |
600,100
-215,600
| -26% | -$12.3M |
|
443
PUT
Union Pacific
UNP
$174B
| $31.5M | 0.02% |
139,300
-55,800
| -29% | -$13.1M |
|
444
CALL
Agnico Eagle Mines
AEM
$73.5B
| $31.3M | 0.02% |
478,100
-73,500
| -13% | -$4.8M |
|
445
CALL
Wayfair
W
$11.1B
| $31.2M | 0.02% |
592,600
+19,300
| +3% | +$1.15M |
|
446
CALL
Williams Companies
WMB
$91.1B
| $31M | 0.02% |
730,000
-43,500
| -6% | -$1.74M |
|
447
PUT
Eaton
ETN
$158B
| $31M | 0.02% |
98,800
-115,400
| -54% | -$37.3M |
|
448
CALL
Energy Transfer Partners
ET
$70.1B
| $30.9M | 0.02% |
1,907,900
+413,100
| +28% | +$6.49M |
|
449
CALL
Thermo Fisher Scientific
TMO
$196B
| $30.6M | 0.02% |
55,400
-8,400
| -13% | -$4.81M |
|
450
CALL
Roku
ROKU
$21.2B
| $30.4M | 0.02% |
507,500
-107,900
| -18% | -$6.33M |
|
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.