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
|
$45.7M |
| 2 |
Walmart
WMT
|
$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$33.2M |
| 5 |
Citigroup
C
|
$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
$111M |
| 3 |
NVIDIA
NVDA
|
$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
$60.9M |
| 5 |
Procter & Gamble
PG
|
$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
Western Union
WU
$2.86B
| $842K | ﹤0.01% |
+75,534
| New | +$842K |
|
377
Direxion Daily Regional Banks Bull 3X Shares
DPST
$750M
| $839K | ﹤0.01% |
10,887
+10,535
| +2,993% | +$812K |
|
378
iShares MSCI Taiwan ETF
EWT
$6.25B
| $838K | ﹤0.01% |
+18,496
| New | +$838K |
|
379
LKQ Corp
LKQ
$8.33B
| $826K | ﹤0.01% |
+14,560
| New | +$826K |
|
380
TE Connectivity
TEL
$61.7B
| $826K | ﹤0.01% |
6,305
-6,357
| -50% | -$833K |
|
381
Vanguard Real Estate ETF
VNQ
$34.7B
| $824K | ﹤0.01% |
9,933
-154
| -2% | -$12.8K |
|
|
HDRO
382
DELISTED
Defiance Next Gen H2 ETF
HDRO
| $824K | ﹤0.01% |
10,548
+1,181
| +13% | +$92.3K |
|
383
ArcBest
ARCB
$1.72B
| $821K | ﹤0.01% |
8,885
+4,425
| +99% | +$409K |
|
384
Gartner
IT
$18.6B
| $821K | ﹤0.01% |
2,523
+1,230
| +95% | +$400K |
|
385
Cintas
CTAS
$82.4B
| $819K | ﹤0.01% |
7,084
+2,084
| +42% | +$241K |
|
386
Fortive
FTV
$16.2B
| $818K | ﹤0.01% |
+12,007
| New | +$818K |
|
387
UBS Group
UBS
$128B
| $815K | ﹤0.01% |
+38,202
| New | +$815K |
|
388
Flowserve
FLS
$7.22B
| $807K | ﹤0.01% |
+23,764
| New | +$807K |
|
|
UNVR
389
DELISTED
Univar Solutions Inc.
UNVR
| $804K | ﹤0.01% |
+22,960
| New | +$804K |
|
390
Ecolab
ECL
$77.6B
| $802K | ﹤0.01% |
4,850
+1,268
| +35% | +$210K |
|
|
JMIA
391
Jumia Technologies
JMIA
$1.09B
| $797K | ﹤0.01% |
242,541
+211,703
| +687% | +$696K |
|
392
Spirit AeroSystems
SPR
$4.8B
| $793K | ﹤0.01% |
22,971
-54,518
| -70% | -$1.88M |
|
393
Deutsche Bank
DB
$67.8B
| $783K | ﹤0.01% |
76,750
-52,898
| -41% | -$540K |
|
394
Bunge Global
BG
$16.9B
| $775K | ﹤0.01% |
+8,118
| New | +$775K |
|
395
Trinseo
TSE
$88.1M
| $765K | ﹤0.01% |
+36,737
| New | +$765K |
|
|
MRNS
396
DELISTED
Marinus Pharmaceuticals, Inc
MRNS
| $765K | ﹤0.01% |
110,917
+26,912
| +32% | +$186K |
|
397
Sonos
SONO
$1.78B
| $762K | ﹤0.01% |
38,859
+21,951
| +130% | +$430K |
|
398
ProShares Ultra S&P500
SSO
$7.2B
| $762K | ﹤0.01% |
15,191
+11,971
| +372% | +$600K |
|
399
Ocular Therapeutix
OCUL
$2.37B
| $759K | ﹤0.01% |
144,030
+122,551
| +571% | +$646K |
|
|
AKTS
400
DELISTED
AKOUSTIS TECHNOLOGIES, INC.
AKTS
| $751K | ﹤0.01% |
243,881
+222,188
| +1,024% | +$684K |
|