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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
AGEN
751
Agenus
AGEN
$154M
| $313K | ﹤0.01% |
+57,210
| New | +$313K |
|
752
Core & Main
CNM
$9.26B
| $313K | ﹤0.01% |
+7,052
| New | +$313K |
|
753
Leggett & Platt
LEG
$1.35B
| $312K | ﹤0.01% |
22,926
+12,305
| +116% | +$167K |
|
754
Bank OZK
OZK
$5.89B
| $312K | ﹤0.01% |
+7,272
| New | +$312K |
|
755
argenx
ARGX
$46.7B
| $311K | ﹤0.01% |
+574
| New | +$311K |
|
756
Service Corp International
SCI
$11B
| $311K | ﹤0.01% |
+3,944
| New | +$311K |
|
757
Taboola.com
TBLA
$1.01B
| $310K | ﹤0.01% |
92,370
-156,674
| -63% | -$526K |
|
758
Cadence Design Systems
CDNS
$92.2B
| $308K | ﹤0.01% |
1,137
-2,536
| -69% | -$687K |
|
759
Syndax Pharmaceuticals
SNDX
$1.36B
| $307K | ﹤0.01% |
15,980
+10,107
| +172% | +$194K |
|
760
BGC Group
BGC
$4.76B
| $306K | ﹤0.01% |
+33,346
| New | +$306K |
|
761
Oscar Health
OSCR
$5.04B
| $305K | ﹤0.01% |
14,384
-73,736
| -84% | -$1.56M |
|
762
Howard Hughes
HHH
$4.68B
| $304K | ﹤0.01% |
+3,934
| New | +$304K |
|
|
YALA
763
Yalla Group
YALA
$1.16B
| $304K | ﹤0.01% |
66,999
+33,564
| +100% | +$152K |
|
764
Casey's General Stores
CASY
$20B
| $303K | ﹤0.01% |
808
-73
| -8% | -$27.4K |
|
|
DQ
765
Daqo New Energy
DQ
$1.77B
| $303K | ﹤0.01% |
14,905
+10,991
| +281% | +$223K |
|
766
Aegon
AEG
$12B
| $301K | ﹤0.01% |
47,174
+46,165
| +4,575% | +$295K |
|
767
Enviri
NVRI
$959M
| $300K | ﹤0.01% |
+29,027
| New | +$300K |
|
|
CNH
768
CNH Industrial
CNH
$14.1B
| $300K | ﹤0.01% |
27,046
-4,847
| -15% | -$53.8K |
|
|
ARR
769
Armour Residential REIT
ARR
$1.74B
| $298K | ﹤0.01% |
+14,620
| New | +$298K |
|
770
United Natural Foods
UNFI
$1.72B
| $298K | ﹤0.01% |
+17,746
| New | +$298K |
|
771
Wendy's
WEN
$1.87B
| $298K | ﹤0.01% |
17,037
-26,557
| -61% | -$465K |
|
772
Zai Lab
ZLAB
$3.16B
| $294K | ﹤0.01% |
12,197
-16,333
| -57% | -$394K |
|
773
Informatica
INFA
$7.55B
| $290K | ﹤0.01% |
11,479
-16,491
| -59% | -$417K |
|
774
Viavi Solutions
VIAV
$2.66B
| $290K | ﹤0.01% |
32,232
+32,227
| +644,540% | +$290K |
|
775
iShares Core S&P Small-Cap ETF
IJR
$85.1B
| $289K | ﹤0.01% |
2,477
-17,030
| -87% | -$1.99M |
|