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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
401
Rithm Capital
RITM
$6.63B
| $1.15M | ﹤0.01% |
+108,105
| New | +$1.15M |
|
402
Buckle
BKE
$3.04B
| $1.15M | ﹤0.01% |
24,263
+17,260
| +246% | +$820K |
|
403
ZimVie
ZIMV
$533M
| $1.15M | ﹤0.01% |
+64,887
| New | +$1.15M |
|
|
AZUL
404
DELISTED
Azul
AZUL
| $1.15M | ﹤0.01% |
118,414
+93,769
| +380% | +$908K |
|
405
Public Storage
PSA
$51.7B
| $1.15M | ﹤0.01% |
+3,756
| New | +$1.15M |
|
406
Dave & Buster's
PLAY
$805M
| $1.14M | ﹤0.01% |
+21,262
| New | +$1.14M |
|
407
St. Joe Company
JOE
$3.05B
| $1.13M | ﹤0.01% |
+18,859
| New | +$1.13M |
|
408
Lemonade
LMND
$3.9B
| $1.13M | ﹤0.01% |
70,332
+68,151
| +3,125% | +$1.1M |
|
409
Revolve Group
RVLV
$1.67B
| $1.12M | ﹤0.01% |
67,457
+5,602
| +9% | +$92.8K |
|
|
ACCD
410
DELISTED
Accolade, Inc. Common Stock
ACCD
| $1.11M | ﹤0.01% |
92,648
+45,653
| +97% | +$548K |
|
411
AvalonBay Communities
AVB
$27.7B
| $1.11M | ﹤0.01% |
5,924
-668
| -10% | -$125K |
|
412
Welltower
WELL
$113B
| $1.11M | ﹤0.01% |
+12,305
| New | +$1.11M |
|
413
Tenet Healthcare
THC
$17B
| $1.11M | ﹤0.01% |
+14,668
| New | +$1.11M |
|
414
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$854M
| $1.11M | ﹤0.01% |
31,799
-63,150
| -67% | -$2.19M |
|
415
Ralph Lauren
RL
$18.7B
| $1.1M | ﹤0.01% |
+7,658
| New | +$1.1M |
|
416
ProShares Ultra Dow30
DDM
$445M
| $1.1M | ﹤0.01% |
13,849
+1,553
| +13% | +$123K |
|
417
GE HealthCare
GEHC
$35.7B
| $1.1M | ﹤0.01% |
14,174
-27,163
| -66% | -$2.1M |
|
418
Polaris
PII
$3.35B
| $1.09M | ﹤0.01% |
+11,488
| New | +$1.09M |
|
419
Bumble
BMBL
$703M
| $1.09M | ﹤0.01% |
73,644
+72,751
| +8,147% | +$1.07M |
|
420
Maplebear
CART
$11.9B
| $1.07M | ﹤0.01% |
+45,619
| New | +$1.07M |
|
421
Ameren
AEE
$27B
| $1.07M | ﹤0.01% |
14,748
+8,028
| +119% | +$580K |
|
|
AD
422
Array Digital Infrastructure, Inc.
AD
$4.43B
| $1.06M | ﹤0.01% |
+25,488
| New | +$1.06M |
|
423
AST SpaceMobile
ASTS
$11B
| $1.05M | ﹤0.01% |
174,540
+88,799
| +104% | +$535K |
|
424
McEwen Inc.
MUX
$745M
| $1.05M | ﹤0.01% |
145,603
+120,705
| +485% | +$870K |
|
425
dLocal
DLO
$3.92B
| $1.05M | ﹤0.01% |
59,246
+35,100
| +145% | +$621K |
|