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 | |
|---|---|---|---|---|---|---|
301
Nasdaq
NDAQ
$53.6B
| $1.88M | ﹤0.01% |
+31,126
| New | +$1.88M |
|
|
SII
302
Sprott
SII
$1.75B
| $1.87M | ﹤0.01% |
45,217
+22,798
| +102% | +$943K |
|
|
WRK
303
DELISTED
WestRock Company
WRK
| $1.87M | ﹤0.01% |
+37,175
| New | +$1.87M |
|
304
Zimmer Biomet
ZBH
$20.9B
| $1.86M | ﹤0.01% |
17,170
+6,880
| +67% | +$747K |
|
305
Cipher Mining
CIFR
$2.96B
| $1.86M | ﹤0.01% |
448,304
-104,087
| -19% | -$432K |
|
306
Solventum
SOLV
$12.6B
| $1.85M | ﹤0.01% |
+35,065
| New | +$1.85M |
|
307
Acadia Healthcare
ACHC
$2.19B
| $1.85M | ﹤0.01% |
+27,412
| New | +$1.85M |
|
308
US Foods
USFD
$17.5B
| $1.82M | ﹤0.01% |
34,429
+27,956
| +432% | +$1.48M |
|
309
Grifois
GRFS
$6.89B
| $1.81M | ﹤0.01% |
287,352
+51,397
| +22% | +$324K |
|
310
Deckers Outdoor
DECK
$17.9B
| $1.8M | ﹤0.01% |
11,178
-85,914
| -88% | -$13.9M |
|
311
Rocket Companies
RKT
$42.6B
| $1.8M | ﹤0.01% |
131,359
+45,749
| +53% | +$627K |
|
312
SiriusXM
SIRI
$8.1B
| $1.78M | ﹤0.01% |
62,892
+52,187
| +488% | +$1.48M |
|
313
Rapid7
RPD
$1.32B
| $1.77M | ﹤0.01% |
+40,914
| New | +$1.77M |
|
314
BP
BP
$87.4B
| $1.77M | ﹤0.01% |
+48,907
| New | +$1.77M |
|
315
Campbell Soup
CPB
$10.1B
| $1.76M | ﹤0.01% |
39,035
+22,763
| +140% | +$1.03M |
|
316
IMAX
IMAX
$1.6B
| $1.76M | ﹤0.01% |
104,986
+92,172
| +719% | +$1.55M |
|
317
ProShares Ultra Silver
AGQ
$894M
| $1.76M | ﹤0.01% |
47,401
-2,495
| -5% | -$92.5K |
|
318
Strategy Inc Common Stock Class A
MSTR
$95.2B
| $1.76M | ﹤0.01% |
+12,760
| New | +$1.76M |
|
319
Elevance Health
ELV
$70.6B
| $1.75M | ﹤0.01% |
+3,231
| New | +$1.75M |
|
320
EPAM Systems
EPAM
$9.44B
| $1.72M | ﹤0.01% |
9,148
+8,114
| +785% | +$1.53M |
|
321
Yum China
YUMC
$16.5B
| $1.72M | ﹤0.01% |
55,663
+41,608
| +296% | +$1.28M |
|
322
NETGEAR
NTGR
$811M
| $1.71M | ﹤0.01% |
112,067
+45,720
| +69% | +$699K |
|
323
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.2B
| $1.7M | ﹤0.01% |
76,007
-169,616
| -69% | -$3.79M |
|
324
Maplebear
CART
$11.9B
| $1.69M | ﹤0.01% |
52,651
-288,546
| -85% | -$9.27M |
|
325
Fair Isaac
FICO
$36.8B
| $1.69M | ﹤0.01% |
+1,134
| New | +$1.69M |
|