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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
Green Plains
GPRE
$657M
| $1.31M | ﹤0.01% |
96,482
+67,532
| +233% | +$914K |
|
|
GAP
377
The Gap, Inc.
GAP
$8.94B
| $1.3M | ﹤0.01% |
+59,058
| New | +$1.3M |
|
378
Timken Company
TKR
$5.3B
| $1.3M | ﹤0.01% |
+15,379
| New | +$1.3M |
|
379
Gannett
GCI
$601M
| $1.29M | ﹤0.01% |
229,867
+28,661
| +14% | +$161K |
|
380
Kimberly-Clark
KMB
$43.5B
| $1.29M | ﹤0.01% |
+9,059
| New | +$1.29M |
|
381
DigitalOcean
DOCN
$3.12B
| $1.29M | ﹤0.01% |
+31,836
| New | +$1.29M |
|
382
B2Gold
BTG
$5.6B
| $1.28M | ﹤0.01% |
414,717
-308,922
| -43% | -$951K |
|
383
JD.com
JD
$48B
| $1.27M | ﹤0.01% |
31,863
-552,060
| -95% | -$22.1M |
|
384
McCormick & Company Non-Voting
MKC
$18.7B
| $1.27M | ﹤0.01% |
+15,406
| New | +$1.27M |
|
385
ProShares Short VIX Short-Term Futures ETF
SVXY
$250M
| $1.26M | ﹤0.01% |
25,189
+13,423
| +114% | +$673K |
|
386
STMicroelectronics
STM
$23.2B
| $1.26M | ﹤0.01% |
42,435
+10,465
| +33% | +$311K |
|
|
HCP
387
DELISTED
HashiCorp, Inc. Class A Common Stock
HCP
| $1.25M | ﹤0.01% |
37,041
+11,161
| +43% | +$378K |
|
388
Sunoco
SUN
$6.98B
| $1.24M | ﹤0.01% |
23,029
+14,771
| +179% | +$793K |
|
389
Futu Holdings
FUTU
$26.2B
| $1.24M | ﹤0.01% |
12,918
-17,053
| -57% | -$1.63M |
|
390
Monster Beverage
MNST
$61.9B
| $1.23M | ﹤0.01% |
23,525
-18,844
| -44% | -$983K |
|
391
Avis
CAR
$5.56B
| $1.23M | ﹤0.01% |
14,007
-27,960
| -67% | -$2.45M |
|
392
Flex
FLEX
$21B
| $1.22M | ﹤0.01% |
+36,585
| New | +$1.22M |
|
393
STAAR Surgical
STAA
$1.37B
| $1.22M | ﹤0.01% |
32,944
+25,197
| +325% | +$935K |
|
394
Magnite
MGNI
$3.47B
| $1.22M | ﹤0.01% |
88,159
+80,635
| +1,072% | +$1.12M |
|
395
Carriage Services
CSV
$669M
| $1.22M | ﹤0.01% |
37,143
+9,067
| +32% | +$298K |
|
396
Bread Financial
BFH
$3B
| $1.21M | ﹤0.01% |
25,531
+16,867
| +195% | +$802K |
|
397
Solventum
SOLV
$12.6B
| $1.21M | ﹤0.01% |
17,390
-17,675
| -50% | -$1.23M |
|
398
Norfolk Southern
NSC
$61.3B
| $1.21M | ﹤0.01% |
+4,876
| New | +$1.21M |
|
399
Crocs
CROX
$4.55B
| $1.21M | ﹤0.01% |
8,345
-5,098
| -38% | -$738K |
|
400
Forward Air
FWRD
$916M
| $1.2M | ﹤0.01% |
+33,914
| New | +$1.2M |
|