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
|
$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$82.5M |
| 3 |
Intel
INTC
|
$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
$39.4M |
| 5 |
Uber
UBER
|
$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$130M |
| 2 |
Pinduoduo
PDD
|
$95.7M |
| 3 |
Boeing
BA
|
$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
$40.7M |
| 5 |
Microsoft
MSFT
|
$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
iShares 1-3 Year Treasury Bond ETF
SHY
$24.5B
| $904K | ﹤0.01% |
+11,033
| New | +$904K |
|
477
Navitas Semiconductor
NVTS
$1.19B
| $902K | ﹤0.01% |
252,757
+180,193
| +248% | +$643K |
|
478
Arvinas
ARVN
$575M
| $899K | ﹤0.01% |
46,907
+38,923
| +488% | +$746K |
|
479
Capricor Therapeutics
CAPR
$308M
| $899K | ﹤0.01% |
+65,210
| New | +$899K |
|
480
Brown-Forman Class B
BF.B
$13.7B
| $895K | ﹤0.01% |
+23,579
| New | +$895K |
|
481
MBIA
MBI
$377M
| $890K | ﹤0.01% |
137,880
+40,887
| +42% | +$264K |
|
482
Equity Residential
EQR
$25.5B
| $888K | ﹤0.01% |
+12,379
| New | +$888K |
|
483
Sunoco
SUN
$6.95B
| $887K | ﹤0.01% |
17,247
-5,782
| -25% | -$297K |
|
484
Enpro
NPO
$4.58B
| $884K | ﹤0.01% |
+5,128
| New | +$884K |
|
485
International Flavors & Fragrances
IFF
$16.9B
| $883K | ﹤0.01% |
10,444
-31,897
| -75% | -$2.7M |
|
486
Unum
UNM
$12.6B
| $883K | ﹤0.01% |
12,103
+2,962
| +32% | +$216K |
|
487
Crocs
CROX
$4.72B
| $878K | ﹤0.01% |
8,023
-322
| -4% | -$35.2K |
|
488
Energy Fuels
UUUU
$2.67B
| $876K | ﹤0.01% |
170,919
+13,302
| +8% | +$68.2K |
|
489
MasTec
MTZ
$14B
| $874K | ﹤0.01% |
6,420
-14,271
| -69% | -$1.94M |
|
490
Atomera
ATOM
$99.8M
| $871K | ﹤0.01% |
75,165
+48,531
| +182% | +$562K |
|
491
Fidelity National Financial
FNF
$16.5B
| $871K | ﹤0.01% |
+15,532
| New | +$871K |
|
492
Zeta Global
ZETA
$4.5B
| $868K | ﹤0.01% |
48,273
+21,380
| +80% | +$384K |
|
493
Ascendis Pharma
ASND
$12.5B
| $865K | ﹤0.01% |
6,288
+4,354
| +225% | +$599K |
|
494
AdaptHealth
AHCO
$1.29B
| $861K | ﹤0.01% |
+90,502
| New | +$861K |
|
495
Ardelyx
ARDX
$1.57B
| $861K | ﹤0.01% |
169,863
-70,336
| -29% | -$357K |
|
496
YieldMax COIN Option Income Strategy ETF
CONY
$1.37B
| $860K | ﹤0.01% |
65,998
-473
| -0.7% | -$6.16K |
|
497
iShares Russell 2000 Value ETF
IWN
$11.9B
| $859K | ﹤0.01% |
5,238
+1,678
| +47% | +$275K |
|
498
Lincoln National
LNC
$7.98B
| $858K | ﹤0.01% |
+27,076
| New | +$858K |
|
499
Vir Biotechnology
VIR
$732M
| $856K | ﹤0.01% |
116,627
+112,354
| +2,629% | +$825K |
|
500
Kohl's
KSS
$1.86B
| $855K | ﹤0.01% |
60,963
-63,590
| -51% | -$892K |
|