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 |
Alphabet (Google) Class C
GOOG
|
+$54.1M |
| 2 |
Apple
AAPL
|
+$28.6M |
| 3 |
Meta Platforms (Facebook)
META
|
+$16.5M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$10.3M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$9.89M |
| 2 |
McDonald's
MCD
|
+$8.52M |
| 3 |
Ralph Lauren
RL
|
+$5.22M |
| 4 |
Intel
INTC
|
+$4.74M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.67M |
Sector Composition
| 1 | Communication Services | 22.01% |
| 2 | Technology | 15.83% |
| 3 | Healthcare | 11.95% |
| 4 | Consumer Discretionary | 9.73% |
| 5 | Financials | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
651
Crane NXT
CXT
$3.51B
| $110K | 0.01% |
+5,413
| New | +$110K |
|
652
MetLife
MET
$52.7B
| $110K | 0.01% |
2,217
-4,787
| -68% | -$238K |
|
653
Annaly Capital Management
NLY
$14.2B
| $110K | 0.01% |
3,008
-578
| -16% | -$21.1K |
|
|
ALDR
654
DELISTED
Alder Biopharmaceuticals, Inc.
ALDR
| $110K | 0.01% |
+2,078
| New | +$110K |
|
|
CYNO
655
DELISTED
Cynosure, Inc. Class A
CYNO
| $110K | 0.01% |
+2,860
| New | +$110K |
|
656
Franklin Resources
BEN
$12.7B
| $108K | 0.01% |
2,205
+895
| +68% | +$43.8K |
|
657
Celldex Therapeutics
CLDX
$1.62B
| $108K | 0.01% |
286
-1,133
| -80% | -$428K |
|
658
IPG Photonics
IPGP
$3.49B
| $108K | 0.01% |
1,274
-568
| -31% | -$48.2K |
|
659
Schwab U.S Small- Cap ETF
SCHA
$18.7B
| $108K | 0.01% |
7,568
+3,320
| +78% | +$47.4K |
|
660
Waste Management
WM
$87.6B
| $108K | 0.01% |
+2,351
| New | +$108K |
|
|
WIRE
661
DELISTED
Encore Wire Corp
WIRE
| $108K | 0.01% |
2,461
-4,300
| -64% | -$189K |
|
|
ARIA
662
DELISTED
Ariad Pharmaceuticals Inc
ARIA
| $108K | 0.01% |
13,172
+11,282
| +597% | +$92.5K |
|
|
TUMI
663
DELISTED
TUMI HLDGS INC COM
TUMI
| $108K | 0.01% |
+5,287
| New | +$108K |
|
664
Azenta
AZTA
$1.35B
| $107K | 0.01% |
+9,388
| New | +$107K |
|
|
JKS
665
JinkoSolar
JKS
$1.25B
| $107K | 0.01% |
3,643
+2,493
| +217% | +$73.2K |
|
|
FRGI
666
DELISTED
Fiesta Restaurant Group, Inc.
FRGI
| $107K | 0.01% |
2,153
+1,424
| +195% | +$70.8K |
|
|
ADVS
667
DELISTED
ADVENT SOFTWARE INC
ADVS
| $107K | 0.01% |
2,430
-3,598
| -60% | -$158K |
|
|
MWE
668
DELISTED
MARKWEST ENERGY PARTNERS, LP
MWE
| $106K | 0.01% |
1,896
-3,729
| -66% | -$208K |
|
669
SPDR S&P Metals & Mining ETF
XME
$2.35B
| $105K | 0.01% |
4,322
-2,668
| -38% | -$64.8K |
|
670
Assurant
AIZ
$10.5B
| $105K | 0.01% |
1,575
+1,483
| +1,612% | +$98.9K |
|
671
Apollo Global Management
APO
$77.4B
| $105K | 0.01% |
+4,748
| New | +$105K |
|
672
Apogee Enterprises
APOG
$900M
| $105K | 0.01% |
2,002
+1,841
| +1,143% | +$96.6K |
|
673
Costco
COST
$425B
| $105K | 0.01% |
+782
| New | +$105K |
|
674
Novo Nordisk
NVO
$243B
| $105K | 0.01% |
3,838
-10,874
| -74% | -$297K |
|
675
Centene
CNC
$14.9B
| $104K | 0.01% |
+2,602
| New | +$104K |
|