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 | |
|---|---|---|---|---|---|---|
451
CALL
Cadence Design Systems
CDNS
$93B
| $30.4M | 0.02% |
98,800
+19,100
| +24% | +$5.66M |
|
452
PUT
Constellation Brands
STZ
$22.6B
| $30.3M | 0.02% |
117,700
+39,900
| +51% | +$10.3M |
|
453
PUT
Halliburton
HAL
$27.6B
| $30.2M | 0.02% |
894,000
-99,100
| -10% | -$3.66M |
|
454
CALL
Blackrock
BLK
$164B
| $30.2M | 0.02% |
38,300
-21,400
| -36% | -$16.7M |
|
455
CALL
Zoom
ZM
$25.2B
| $30M | 0.02% |
507,200
-39,200
| -7% | -$2.41M |
|
456
CALL
Hershey
HSY
$35B
| $30M | 0.02% |
163,300
-20,800
| -11% | -$4.02M |
|
457
PUT
Affirm
AFRM
$24.8B
| $30M | 0.02% |
993,100
-706,400
| -42% | -$22.7M |
|
458
CALL
Wynn Resorts
WYNN
$9.79B
| $29.9M | 0.02% |
334,400
-24,400
| -7% | -$2.34M |
|
459
PUT
Northrop Grumman
NOC
$74.6B
| $29.8M | 0.02% |
68,300
-5,900
| -8% | -$2.69M |
|
460
PUT
Global Payments
GPN
$21.6B
| $29.7M | 0.02% |
306,700
+264,700
| +630% | +$29.2M |
|
461
PUT
American Electric Power
AEP
$72.4B
| $29.7M | 0.02% |
338,000
+153,800
| +83% | +$13.5M |
|
462
iShares MSCI Brazil ETF
EWZ
$9.27B
| $29.7M | 0.02% |
1,084,950
+927,703
| +590% | +$28.2M |
|
463
CALL
VanEck Durable High Dividend ETF
DURA
$38.5M
| $29.4M | 0.02% |
111,400
+14,300
| +15% | +$453K |
|
464
CALL
Alcoa
AA
$12.2B
| $29.2M | 0.02% |
734,500
+188,700
| +35% | +$7.3M |
|
465
PUT
Roku
ROKU
$21.2B
| $29.1M | 0.02% |
486,100
-257,700
| -35% | -$15.1M |
|
466
PUT
Novartis
NVS
$292B
| $29.1M | 0.02% |
285,000
+156,700
| +122% | +$15.7M |
|
467
PUT
PNC Financial Services
PNC
$101B
| $28.9M | 0.02% |
186,100
-95,900
| -34% | -$14.9M |
|
468
PUT
Norwegian Cruise Line
NCLH
$8.87B
| $28.9M | 0.02% |
1,539,700
-243,100
| -14% | -$4.27M |
|
469
PUT
American International
AIG
$41.5B
| $28.9M | 0.02% |
388,700
+177,500
| +84% | +$13.6M |
|
470
CALL
Danaher
DHR
$127B
| $28.8M | 0.02% |
126,600
+600
| +0.5% | +$152K |
|
|
471
CALL
PNC Financial Services
PNC
$101B
| $28.8M | 0.02% |
185,000
+48,200
| +35% | +$7.47M |
|
472
PUT
Dollar Tree
DLTR
$23.5B
| $28.6M | 0.02% |
268,200
+57,600
| +27% | +$6.8M |
|
473
PUT
Chubb
CB
$133B
| $28.4M | 0.02% |
111,400
+20,200
| +22% | +$5.19M |
|
474
PUT
American Tower
AMT
$77.4B
| $28.4M | 0.02% |
146,100
-112,600
| -44% | -$21M |
|
475
CALL
Etsy
ETSY
$7.64B
| $28.3M | 0.02% |
480,300
+93,200
| +24% | +$5.96M |
|
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.