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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
$23.3M |
| 3 |
Pinduoduo
PDD
|
$17.3M |
| 4 |
Pfizer
PFE
|
$16.8M |
| 5 |
American Airlines Group
AAL
|
$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$38.1M |
| 3 |
AutoZone
AZO
|
$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$25.3M |
| 5 |
Apple
AAPL
|
$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ANSS
626
DELISTED
Ansys
ANSS
| $555K | ﹤0.01% |
+1,636
| New | +$555K |
|
627
TE Connectivity
TEL
$61.7B
| $554K | ﹤0.01% |
4,291
+3,175
| +284% | +$410K |
|
|
GTHX
628
DELISTED
G1 Therapeutics, Inc. Common Stock
GTHX
| $554K | ﹤0.01% |
23,038
-3,458
| -13% | -$83.2K |
|
629
Allstate
ALL
$53.1B
| $551K | ﹤0.01% |
+4,803
| New | +$551K |
|
630
Boise Cascade
BCC
$3.36B
| $550K | ﹤0.01% |
+9,195
| New | +$550K |
|
|
IAA
631
DELISTED
IAA, Inc. Common Stock
IAA
| $550K | ﹤0.01% |
9,977
+7,549
| +311% | +$416K |
|
632
Calumet Specialty Products
CLMT
$1.55B
| $548K | ﹤0.01% |
89,839
+77,949
| +656% | +$475K |
|
|
PETQ
633
DELISTED
PetIQ, Inc. Class A Common Stock
PETQ
| $546K | ﹤0.01% |
+15,506
| New | +$546K |
|
|
CMRC
634
Commerce.com, Inc. Series 1 Common Stock
CMRC
$361M
| $545K | ﹤0.01% |
9,434
-13,244
| -58% | -$765K |
|
635
Nova
NVMI
$7.58B
| $545K | ﹤0.01% |
5,993
+4,928
| +463% | +$448K |
|
|
ENZ
636
DELISTED
Enzo Biochem, Inc.
ENZ
| $545K | ﹤0.01% |
158,642
+36,603
| +30% | +$126K |
|
637
Hyliion Holdings
HYLN
$309M
| $544K | ﹤0.01% |
51,058
-33,390
| -40% | -$356K |
|
638
ProPetro Holding
PUMP
$496M
| $544K | ﹤0.01% |
+51,070
| New | +$544K |
|
639
VanEck Rare Earth/Strategic Metals ETF
REMX
$717M
| $544K | ﹤0.01% |
7,256
+3,839
| +112% | +$288K |
|
640
Vontier
VNT
$6.37B
| $543K | ﹤0.01% |
17,954
+11,040
| +160% | +$334K |
|
|
ALLK
641
DELISTED
Allakos
ALLK
| $541K | ﹤0.01% |
+4,715
| New | +$541K |
|
642
Amphenol
APH
$135B
| $541K | ﹤0.01% |
+16,406
| New | +$541K |
|
643
Deckers Outdoor
DECK
$17.9B
| $540K | ﹤0.01% |
+9,816
| New | +$540K |
|
644
OR Royalties Inc.
OR
$6.48B
| $539K | ﹤0.01% |
48,981
+20,442
| +72% | +$225K |
|
645
Brighthouse Financial
BHF
$2.48B
| $536K | ﹤0.01% |
12,129
-6,569
| -35% | -$290K |
|
646
iShares MSCI China A ETF
CNYA
$213M
| $536K | ﹤0.01% |
13,029
+10,411
| +398% | +$428K |
|
647
Invesco CurrencyShares Canadian Dollar Trust
FXC
$91.7M
| $536K | ﹤0.01% |
6,867
-3,205
| -32% | -$250K |
|
648
Eli Lilly
LLY
$652B
| $533K | ﹤0.01% |
+2,857
| New | +$533K |
|
649
BARK
BARK
$149M
| $532K | ﹤0.01% |
+47,918
| New | +$532K |
|
650
Ceragon Networks
CRNT
$180M
| $532K | ﹤0.01% |
141,271
+102,389
| +263% | +$386K |
|