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 |
Apple
AAPL
|
+$552M |
| 2 |
Strategy Inc
MSTR
|
+$85.8M |
| 3 |
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
|
+$48.1M |
| 4 |
Intel
INTC
|
+$45.4M |
| 5 |
Uber
UBER
|
+$43M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$133M |
| 2 |
Pinduoduo
PDD
|
+$82.6M |
| 3 |
Boeing
BA
|
+$49.8M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$45.1M |
| 5 |
Microsoft
MSFT
|
+$41M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.68% |
| 2 | Consumer Discretionary | 0.23% |
| 3 | Healthcare | 0.19% |
| 4 | Financials | 0.13% |
| 5 | Communication Services | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
626
CALL
NetApp
NTAP
$32.6B
| $20.8M | 0.01% |
179,400
-32,900
| -15% | -$4.02M |
|
627
PUT
Warner Bros
WBD
$64.8B
| $20.8M | 0.01% |
1,966,600
+41,400
| +2% | +$385K |
|
628
CALL
Five Below
FIVE
$11.3B
| $20.7M | 0.01% |
197,500
-143,600
| -42% | -$13.7M |
|
629
CALL
Viking Holdings
VIK
$44.8B
| $20.7M | 0.01% |
470,300
+469,800
| +93,960% | +$19.9M |
|
630
PUT
Wayfair
W
$11.1B
| $20.7M | 0.01% |
467,100
-400
| -0.1% | -$18.9K |
|
631
PUT
Intercontinental Exchange
ICE
$80.6B
| $20.6M | 0.01% |
138,000
-62,900
| -31% | -$9.96M |
|
632
CVS Health
CVS
$138B
| $20.5M | 0.01% |
457,466
-80,720
| -15% | -$4.53M |
|
633
CALL
YPF
YPF
$20.6B
| $20.5M | 0.01% |
481,800
+171,300
| +55% | +$5.62M |
|
634
PUT
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$156M
| $20.5M | 0.01% |
451,900
+62,400
| +16% | +$3.02M |
|
635
PUT
Synchrony
SYF
$23.7B
| $20.4M | 0.01% |
314,000
+57,800
| +23% | +$3.54M |
|
636
PUT
SAP
SAP
$174B
| $20.3M | 0.01% |
82,600
+23,700
| +40% | +$5.64M |
|
637
Verizon
VZ
$185B
| $20.3M | 0.01% |
+507,587
| New | +$21.4M |
|
638
CALL
Celsius Holdings
CELH
$7.28B
| $20.3M | 0.01% |
770,400
+83,900
| +12% | +$2.49M |
|
639
CALL
Motorola Solutions
MSI
$67.1B
| $20.2M | 0.01% |
43,800
+23,200
| +113% | +$11M |
|
640
CALL
iShares Gold Trust
IAU
$64.2B
| $20.2M | 0.01% |
408,600
-38,100
| -9% | -$1.91M |
|
641
Direxion Daily Financial Bull 3x ETF
FAS
$2.37B
| $20.2M | 0.01% |
133,599
-20,304
| -13% | -$3.13M |
|
642
PUT
Core Scientific
CORZ
$7.51B
| $20.2M | 0.01% |
1,435,500
+189,500
| +15% | +$2.8M |
|
643
CALL
Norwegian Cruise Line
NCLH
$8.87B
| $20.1M | 0.01% |
782,400
+144,200
| +23% | +$3.64M |
|
644
PUT
CleanSpark
CLSK
$3.93B
| $20.1M | 0.01% |
2,179,300
+803,100
| +58% | +$9.71M |
|
645
Wells Fargo
WFC
$262B
| $19.8M | 0.01% |
+282,468
| New | +$19.3M |
|
646
CALL
Intuitive Machines
LUNR
$2.26B
| $19.8M | 0.01% |
1,091,700
+317,800
| +41% | +$3.52M |
|
647
CALL
Cleveland-Cliffs
CLF
$5.39B
| $19.8M | 0.01% |
2,103,700
-537,400
| -20% | -$6.48M |
|
648
PUT
Rocket Lab Corp
RKLB
$43.6B
| $19.8M | 0.01% |
775,600
+150,400
| +24% | +$2.64M |
|
649
CALL
Royal Caribbean
RCL
$76.7B
| $19.7M | 0.01% |
85,500
-187,500
| -69% | -$41.5M |
|
650
PUT
Northrop Grumman
NOC
$74.6B
| $19.7M | 0.01% |
42,000
-14,300
| -25% | -$7.19M |
|
Similar funds
Simplex Trading's Q4 2024 Portfolio in Review
As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.
Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.
By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
- Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
- Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
- Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
- Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
- Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
- Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.
Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.