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 | |
|---|---|---|---|---|---|---|
576
Stratasys
SSYS
$834M
| $617K | ﹤0.01% |
43,210
+7,024
| +19% | +$100K |
|
577
TotalEnergies
TTE
$136B
| $613K | ﹤0.01% |
+9,100
| New | +$613K |
|
578
ProShares Ultra Silver
AGQ
$853M
| $612K | ﹤0.01% |
22,544
-40,722
| -64% | -$1.11M |
|
579
Colgate-Palmolive
CL
$67.2B
| $611K | ﹤0.01% |
7,668
-65,540
| -90% | -$5.22M |
|
580
ICICI Bank
IBN
$113B
| $611K | ﹤0.01% |
25,654
-13,031
| -34% | -$310K |
|
581
Brinker International
EAT
$6.88B
| $610K | ﹤0.01% |
14,142
+13,208
| +1,414% | +$570K |
|
582
MSC Industrial Direct
MSM
$5.1B
| $605K | ﹤0.01% |
+5,975
| New | +$605K |
|
583
Allison Transmission
ALSN
$7.41B
| $601K | ﹤0.01% |
10,342
+8,730
| +542% | +$507K |
|
584
Mission Produce
AVO
$829M
| $599K | ﹤0.01% |
59,399
+58,148
| +4,648% | +$586K |
|
585
Dynatrace
DT
$14.4B
| $599K | ﹤0.01% |
+10,961
| New | +$599K |
|
|
VRN
586
DELISTED
Veren
VRN
| $599K | ﹤0.01% |
86,556
+43,978
| +103% | +$304K |
|
587
Agilon Health
AGL
$468M
| $597K | ﹤0.01% |
47,577
-28,318
| -37% | -$355K |
|
588
CommScope
COMM
$3.59B
| $597K | ﹤0.01% |
212,012
+14,915
| +8% | +$42K |
|
589
KKR & Co
KKR
$124B
| $594K | ﹤0.01% |
+7,176
| New | +$594K |
|
590
Erie Indemnity
ERIE
$17.3B
| $592K | ﹤0.01% |
+1,769
| New | +$592K |
|
591
Sportradar
SRAD
$9.25B
| $589K | ﹤0.01% |
53,368
+33,155
| +164% | +$366K |
|
592
Timken Company
TKR
$5.32B
| $589K | ﹤0.01% |
+7,353
| New | +$589K |
|
593
MDU Resources
MDU
$3.36B
| $586K | ﹤0.01% |
53,511
+52,103
| +3,700% | +$571K |
|
594
Arrowhead Research
ARWR
$3.99B
| $585K | ﹤0.01% |
+19,144
| New | +$585K |
|
595
Core & Main
CNM
$9.26B
| $585K | ﹤0.01% |
14,493
-12,790
| -47% | -$516K |
|
596
Oscar Health
OSCR
$5.04B
| $585K | ﹤0.01% |
+63,991
| New | +$585K |
|
597
Tandem Diabetes Care
TNDM
$836M
| $585K | ﹤0.01% |
+19,801
| New | +$585K |
|
598
DHT Holdings
DHT
$1.94B
| $578K | ﹤0.01% |
+58,940
| New | +$578K |
|
599
Public Service Enterprise Group
PEG
$40.8B
| $578K | ﹤0.01% |
+9,465
| New | +$578K |
|
600
Papa John's
PZZA
$1.63B
| $578K | ﹤0.01% |
7,592
-12,155
| -62% | -$925K |
|