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
| 1 |
Apple
AAPL
|
$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$82.5M |
| 3 |
Intel
INTC
|
$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
$39.4M |
| 5 |
Uber
UBER
|
$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$130M |
| 2 |
Pinduoduo
PDD
|
$95.7M |
| 3 |
Boeing
BA
|
$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
$40.7M |
| 5 |
Microsoft
MSFT
|
$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
Talos Energy
TALO
$1.65B
| $1.74M | ﹤0.01% |
179,337
+67,842
| +61% | +$659K |
|
302
ICICI Bank
IBN
$113B
| $1.73M | ﹤0.01% |
+58,070
| New | +$1.73M |
|
303
Jack in the Box
JACK
$386M
| $1.73M | ﹤0.01% |
41,515
+34,267
| +473% | +$1.43M |
|
304
Annaly Capital Management
NLY
$14.2B
| $1.73M | ﹤0.01% |
94,292
-7,742
| -8% | -$142K |
|
305
ProShares UltraShort Bloomberg Natural Gas
KOLD
$172M
| $1.72M | ﹤0.01% |
40,332
-45,498
| -53% | -$1.94M |
|
306
Planet Fitness
PLNT
$8.77B
| $1.7M | ﹤0.01% |
17,242
+8,679
| +101% | +$858K |
|
307
CorMedix
CRMD
$926M
| $1.7M | ﹤0.01% |
210,356
-10,961
| -5% | -$88.7K |
|
308
Darling Ingredients
DAR
$5.07B
| $1.7M | ﹤0.01% |
50,418
-659
| -1% | -$22.2K |
|
309
Patterson-UTI
PTEN
$2.18B
| $1.69M | ﹤0.01% |
204,796
+127,747
| +166% | +$1.05M |
|
310
Upwork
UPWK
$2.15B
| $1.69M | ﹤0.01% |
103,389
+49,615
| +92% | +$811K |
|
|
NBIS
311
Nebius Group N.V. Class A Ordinary Shares
NBIS
$15.6B
| $1.69M | ﹤0.01% |
+61,018
| New | +$1.69M |
|
312
SPDR Portfolio S&P 500 Growth ETF
SPYG
$40.8B
| $1.69M | ﹤0.01% |
19,174
+814
| +4% | +$71.5K |
|
313
KE Holdings
BEKE
$22.4B
| $1.68M | ﹤0.01% |
+91,407
| New | +$1.68M |
|
314
Direxion Daily CSI 300 China A Share Bull 2X Shares
CHAU
$163M
| $1.67M | ﹤0.01% |
+114,374
| New | +$1.67M |
|
315
Martin Marietta Materials
MLM
$37.5B
| $1.66M | ﹤0.01% |
3,221
+2,852
| +773% | +$1.47M |
|
316
Scorpio Tankers
STNG
$2.71B
| $1.66M | ﹤0.01% |
+33,446
| New | +$1.66M |
|
317
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$29.8B
| $1.64M | ﹤0.01% |
+15,382
| New | +$1.64M |
|
318
Lightspeed Commerce
LSPD
$1.65B
| $1.64M | ﹤0.01% |
+107,593
| New | +$1.64M |
|
319
ZIM Integrated Shipping Services
ZIM
$1.62B
| $1.63M | ﹤0.01% |
75,968
-44,398
| -37% | -$953K |
|
|
ETHU
320
2x Ether ETF
ETHU
$2.61B
| $1.61M | ﹤0.01% |
+10,320
| New | +$1.61M |
|
321
Keurig Dr Pepper
KDP
$38.9B
| $1.6M | ﹤0.01% |
+49,884
| New | +$1.6M |
|
322
PPL Corp
PPL
$26.6B
| $1.59M | ﹤0.01% |
49,058
+41,861
| +582% | +$1.36M |
|
323
Nutrien
NTR
$27.4B
| $1.59M | ﹤0.01% |
+35,517
| New | +$1.59M |
|
324
Analog Devices
ADI
$122B
| $1.59M | ﹤0.01% |
7,475
-34,393
| -82% | -$7.31M |
|
325
PNC Financial Services
PNC
$80.5B
| $1.59M | ﹤0.01% |
+8,219
| New | +$1.59M |
|