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 |
NVIDIA
NVDA
|
$114M |
| 2 |
Citigroup
C
|
$77M |
| 3 |
Broadcom
AVGO
|
$53M |
| 4 |
Pinduoduo
PDD
|
$49.7M |
| 5 |
Intel
INTC
|
$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
$92.5M |
| 2 |
Pfizer
PFE
|
$67.5M |
| 3 |
Boeing
BA
|
$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
$44.9M |
| 5 |
PayPal
PYPL
|
$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
326
Annaly Capital Management
NLY
$14.2B
| $1.68M | ﹤0.01% |
88,290
-29,570
| -25% | -$563K |
|
327
Vestis
VSTS
$601M
| $1.68M | ﹤0.01% |
136,964
+129,485
| +1,731% | +$1.58M |
|
328
Pool Corp
POOL
$12.4B
| $1.67M | ﹤0.01% |
+5,448
| New | +$1.67M |
|
329
NextDecade
NEXT
$2.8B
| $1.67M | ﹤0.01% |
210,310
+111,295
| +112% | +$883K |
|
330
Xcel Energy
XEL
$43B
| $1.65M | ﹤0.01% |
30,986
+6,848
| +28% | +$366K |
|
331
Camtek
CAMT
$3.6B
| $1.64M | ﹤0.01% |
+13,094
| New | +$1.64M |
|
332
Rio Tinto
RIO
$104B
| $1.64M | ﹤0.01% |
24,810
-6,370
| -20% | -$420K |
|
333
Alpha Metallurgical Resources
AMR
$1.91B
| $1.62M | ﹤0.01% |
+5,764
| New | +$1.62M |
|
334
Ingersoll Rand
IR
$32.2B
| $1.62M | ﹤0.01% |
+17,799
| New | +$1.62M |
|
335
Hecla Mining
HL
$6.04B
| $1.61M | ﹤0.01% |
332,713
-81,391
| -20% | -$395K |
|
336
iShares China Large-Cap ETF
FXI
$6.65B
| $1.61M | ﹤0.01% |
+61,786
| New | +$1.61M |
|
337
General Mills
GIS
$27B
| $1.6M | ﹤0.01% |
25,292
-117,917
| -82% | -$7.45M |
|
338
AST SpaceMobile
ASTS
$11.4B
| $1.58M | ﹤0.01% |
136,001
+47,715
| +54% | +$554K |
|
339
Invesco Senior Loan ETF
BKLN
$6.98B
| $1.57M | ﹤0.01% |
74,517
-94,010
| -56% | -$1.98M |
|
340
Groupon
GRPN
$971M
| $1.56M | ﹤0.01% |
101,795
-40,253
| -28% | -$616K |
|
341
Tradeweb Markets
TW
$25.4B
| $1.56M | ﹤0.01% |
14,683
-3,398
| -19% | -$360K |
|
342
PG&E
PCG
$33.2B
| $1.55M | ﹤0.01% |
88,837
+549
| +0.6% | +$9.59K |
|
343
Okta
OKTA
$16.1B
| $1.54M | ﹤0.01% |
16,492
-15,934
| -49% | -$1.49M |
|
|
JMIA
344
Jumia Technologies
JMIA
$1.09B
| $1.54M | ﹤0.01% |
219,251
+138,222
| +171% | +$970K |
|
345
Dover
DOV
$24.4B
| $1.52M | ﹤0.01% |
8,443
+4,568
| +118% | +$824K |
|
346
Immunovant
IMVT
$2.99B
| $1.5M | ﹤0.01% |
56,961
+31,972
| +128% | +$844K |
|
347
Universal Display
OLED
$6.91B
| $1.49M | ﹤0.01% |
7,080
+2,224
| +46% | +$467K |
|
348
Bank of Hawaii
BOH
$2.72B
| $1.48M | ﹤0.01% |
25,930
+23,839
| +1,140% | +$1.36M |
|
349
Confluent
CFLT
$6.67B
| $1.48M | ﹤0.01% |
+50,196
| New | +$1.48M |
|
350
Organon & Co
OGN
$2.7B
| $1.48M | ﹤0.01% |
71,586
-64,832
| -48% | -$1.34M |
|