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 |
Invesco QQQ Trust
QQQ
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
776
AvalonBay Communities
AVB
$27.9B
| $363K | ﹤0.01% |
2,266
+1,256
| +124% | +$201K |
|
777
Azenta
AZTA
$1.44B
| $363K | ﹤0.01% |
5,361
+5,331
| +17,770% | +$361K |
|
778
Peabody Energy
BTU
$2.26B
| $363K | ﹤0.01% |
151,026
+146,223
| +3,044% | +$351K |
|
779
MINISO
MNSO
$7.75B
| $362K | ﹤0.01% |
+13,720
| New | +$362K |
|
|
ZNGA
780
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $362K | ﹤0.01% |
36,711
-263,370
| -88% | -$2.6M |
|
781
OR Royalties Inc.
OR
$6.72B
| $361K | ﹤0.01% |
28,539
+22,649
| +385% | +$286K |
|
782
Green Dot
GDOT
$743M
| $360K | ﹤0.01% |
6,452
+5,527
| +598% | +$308K |
|
|
WPRT
783
Westport Fuel Systems
WPRT
$40.4M
| $359K | ﹤0.01% |
6,738
-10,816
| -62% | -$576K |
|
|
INFN
784
DELISTED
Infinera Corporation Common Stock
INFN
| $359K | ﹤0.01% |
34,273
-23,990
| -41% | -$251K |
|
785
CNX Resources
CNX
$4.18B
| $357K | ﹤0.01% |
33,104
+29,480
| +813% | +$318K |
|
786
Fox Class A
FOXA
$28.5B
| $356K | ﹤0.01% |
+12,226
| New | +$356K |
|
787
Canadian National Railway
CNI
$58.5B
| $355K | ﹤0.01% |
+3,235
| New | +$355K |
|
788
Paycom
PAYC
$12.8B
| $354K | ﹤0.01% |
+783
| New | +$354K |
|
789
First Bancorp
FBP
$3.52B
| $353K | ﹤0.01% |
38,370
+8,609
| +29% | +$79.2K |
|
790
CarGurus
CARG
$3.61B
| $352K | ﹤0.01% |
11,100
+10,336
| +1,353% | +$328K |
|
791
ProShares UltraShort Dow 30
DXD
$51.8M
| $352K | ﹤0.01% |
5,653
+1,268
| +29% | +$79K |
|
|
SLCA
792
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $352K | ﹤0.01% |
50,269
-734
| -1% | -$5.14K |
|
793
UBS Group
UBS
$129B
| $351K | ﹤0.01% |
24,847
+21,613
| +668% | +$305K |
|
794
Ambac
AMBC
$407M
| $350K | ﹤0.01% |
22,766
-6,488
| -22% | -$99.7K |
|
795
Grifois
GRFS
$6.8B
| $350K | ﹤0.01% |
19,024
+14,758
| +346% | +$272K |
|
|
CAJ
796
DELISTED
Canon, Inc.
CAJ
| $350K | ﹤0.01% |
18,054
+15,895
| +736% | +$308K |
|
|
FSKR
797
DELISTED
FS KKR Capital Corp. II
FSKR
| $349K | ﹤0.01% |
+21,326
| New | +$349K |
|
|
TRQ
798
DELISTED
Turquoise Hill Resources Ltd
TRQ
| $349K | ﹤0.01% |
28,164
+16,869
| +149% | +$209K |
|
799
Carpenter Technology
CRS
$12.1B
| $348K | ﹤0.01% |
+11,983
| New | +$348K |
|
|
MTLS
800
Materialise
MTLS
$307M
| $348K | ﹤0.01% |
+6,420
| New | +$348K |
|