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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
426
CVR Partners
UAN
$922M
| $808K | ﹤0.01% |
10,755
+7,573
| +238% | +$569K |
|
427
Embraer
ERJ
$11.1B
| $805K | ﹤0.01% |
+17,435
| New | +$805K |
|
428
Vanguard Small-Cap ETF
VB
$66.8B
| $802K | ﹤0.01% |
3,620
-2,502
| -41% | -$554K |
|
429
Cooper-Standard Automotive
CPS
$688M
| $798K | ﹤0.01% |
52,123
+24,829
| +91% | +$380K |
|
430
Genpact
G
$7.71B
| $790K | ﹤0.01% |
15,698
+9,423
| +150% | +$474K |
|
431
LegalZoom.com
LZ
$1.87B
| $790K | ﹤0.01% |
91,805
-80,639
| -47% | -$694K |
|
432
Texas Roadhouse
TXRH
$11.1B
| $790K | ﹤0.01% |
4,746
-5,261
| -53% | -$876K |
|
433
AvidXchange
AVDX
$2.06B
| $784K | ﹤0.01% |
+92,530
| New | +$784K |
|
434
Elevance Health
ELV
$69.4B
| $782K | ﹤0.01% |
1,799
-671
| -27% | -$292K |
|
435
Hologic
HOLX
$14.8B
| $773K | ﹤0.01% |
12,524
-5,858
| -32% | -$362K |
|
436
EchoStar
SATS
$23.2B
| $773K | ﹤0.01% |
+30,226
| New | +$773K |
|
|
CMRX
437
DELISTED
Chimerix, Inc.
CMRX
| $768K | ﹤0.01% |
90,361
+45,675
| +102% | +$388K |
|
438
Fabrinet
FN
$13.2B
| $758K | ﹤0.01% |
3,842
-1,481
| -28% | -$292K |
|
439
Lumentum
LITE
$10.4B
| $756K | ﹤0.01% |
+12,134
| New | +$756K |
|
|
NVRO
440
DELISTED
NEVRO CORP.
NVRO
| $756K | ﹤0.01% |
129,605
+69,550
| +116% | +$406K |
|
441
CyberArk
CYBR
$23.6B
| $754K | ﹤0.01% |
2,232
+2,150
| +2,622% | +$726K |
|
442
Essential Utilities
WTRG
$10.8B
| $752K | ﹤0.01% |
+19,031
| New | +$752K |
|
443
Winnebago Industries
WGO
$1.02B
| $749K | ﹤0.01% |
+21,755
| New | +$749K |
|
444
Transocean
RIG
$2.98B
| $742K | ﹤0.01% |
234,230
-60,330
| -20% | -$191K |
|
445
Fidelity National Information Services
FIS
$36B
| $741K | ﹤0.01% |
+9,923
| New | +$741K |
|
446
Upwork
UPWK
$2.12B
| $740K | ﹤0.01% |
56,719
-46,670
| -45% | -$609K |
|
447
Vital Farms
VITL
$2.11B
| $739K | ﹤0.01% |
24,254
-10,021
| -29% | -$305K |
|
448
PTC
PTC
$25.5B
| $738K | ﹤0.01% |
4,765
+3,630
| +320% | +$562K |
|
|
BRSL
449
Brightstar Lottery PLC
BRSL
$3.19B
| $733K | ﹤0.01% |
+45,098
| New | +$733K |
|
450
Tilray
TLRY
$1.23B
| $729K | ﹤0.01% |
1,108,586
-465,093
| -30% | -$306K |
|