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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
Enova International
ENVA
$3.17B
| $630K | 0.03% |
42,443
+31,766
| +298% | +$472K |
|
377
RH
RH
$4.38B
| $630K | 0.03% |
+13,624
| New | +$630K |
|
378
Carriage Services
CSV
$698M
| $628K | 0.03% |
23,178
+23,008
| +13,534% | +$623K |
|
379
ResMed
RMD
$40B
| $627K | 0.03% |
+8,720
| New | +$627K |
|
380
H&R Block
HRB
$6.76B
| $626K | 0.03% |
26,951
+17,358
| +181% | +$403K |
|
381
Centene
CNC
$15.8B
| $625K | 0.03% |
17,550
-4,446
| -20% | -$158K |
|
382
Cirrus Logic
CRUS
$6.3B
| $625K | 0.03% |
+10,305
| New | +$625K |
|
383
Cytokinetics
CYTK
$5.9B
| $619K | 0.03% |
48,194
+34,828
| +261% | +$447K |
|
384
iShares MSCI Turkey ETF
TUR
$170M
| $618K | 0.03% |
17,263
-280
| -2% | -$10K |
|
|
ICPT
385
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $616K | 0.03% |
5,447
-6,172
| -53% | -$698K |
|
386
ScottsMiracle-Gro
SMG
$3.45B
| $615K | 0.03% |
+6,595
| New | +$615K |
|
387
Ligand Pharmaceuticals
LGND
$3.31B
| $613K | 0.03% |
9,293
+9,243
| +18,486% | +$610K |
|
388
FibroGen
FGEN
$46M
| $611K | 0.03% |
992
+24
| +2% | +$14.8K |
|
389
Lamar Advertising Co
LAMR
$12.7B
| $609K | 0.03% |
+8,152
| New | +$609K |
|
390
Teck Resources
TECK
$19.3B
| $607K | 0.03% |
27,719
+4,857
| +21% | +$106K |
|
|
SPA
391
DELISTED
Sparton
SPA
| $606K | 0.03% |
28,882
+131
| +0.5% | +$2.75K |
|
|
SPN
392
DELISTED
Superior Energy Services, Inc.
SPN
| $606K | 0.03% |
42,535
+37,923
| +822% | +$540K |
|
|
DNB
393
DELISTED
Dun & Bradstreet
DNB
| $599K | 0.03% |
5,551
+5,206
| +1,509% | +$562K |
|
394
Halliburton
HAL
$19.1B
| $598K | 0.03% |
+12,161
| New | +$598K |
|
395
Tower Semiconductor
TSEM
$7.7B
| $598K | 0.03% |
25,972
+4,878
| +23% | +$112K |
|
|
MNDT
396
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $595K | 0.03% |
47,229
+8,819
| +23% | +$111K |
|
397
Xylem
XYL
$34.6B
| $594K | 0.03% |
11,845
+6,911
| +140% | +$347K |
|
398
iShares Russell 2000 Growth ETF
IWO
$13.1B
| $593K | 0.03% |
+3,671
| New | +$593K |
|
399
iShares Semiconductor ETF
SOXX
$14.8B
| $592K | 0.03% |
+12,975
| New | +$592K |
|
|
TGP
400
DELISTED
Teekay LNG Partners L.P.
TGP
| $591K | 0.03% |
33,679
+29,721
| +751% | +$522K |
|