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 | |
|---|---|---|---|---|---|---|
1076
Algoma Steel
ASTL
$484M
| $105K | ﹤0.01% |
10,328
-13,531
| -57% | -$138K |
|
1077
VanEck BDC Income ETF
BIZD
$1.68B
| $105K | ﹤0.01% |
6,368
+6,137
| +2,657% | +$101K |
|
|
BLUE
1078
DELISTED
bluebird bio
BLUE
| $105K | ﹤0.01% |
10,175
-5,456
| -35% | -$56.3K |
|
|
CIM
1079
Chimera Investment
CIM
$1.17B
| $105K | ﹤0.01% |
6,639
-917
| -12% | -$14.5K |
|
1080
Campbell Soup
CPB
$10.1B
| $105K | ﹤0.01% |
2,165
-36,870
| -94% | -$1.79M |
|
1081
Calavo Growers
CVGW
$496M
| $105K | ﹤0.01% |
3,686
-9,085
| -71% | -$259K |
|
1082
iShares Core Dividend Growth ETF
DGRO
$34.4B
| $105K | ﹤0.01% |
+1,680
| New | +$105K |
|
1083
Global X MSCI Greece ETF
GREK
$307M
| $105K | ﹤0.01% |
2,434
+1,729
| +245% | +$74.6K |
|
1084
Qfin Holdings, Inc. American Depositary Shares
QFIN
$3.81B
| $105K | ﹤0.01% |
+3,527
| New | +$105K |
|
1085
Tilly's
TLYS
$59.7M
| $105K | ﹤0.01% |
20,649
+8,098
| +65% | +$41.2K |
|
1086
Tenaris
TS
$18.8B
| $105K | ﹤0.01% |
+3,319
| New | +$105K |
|
1087
Cabot Corp
CBT
$4.33B
| $104K | ﹤0.01% |
933
+36
| +4% | +$4.01K |
|
1088
Pyxis Oncology
PYXS
$115M
| $104K | ﹤0.01% |
28,470
-12,286
| -30% | -$44.9K |
|
1089
Dorchester Minerals
DMLP
$1.21B
| $103K | ﹤0.01% |
3,419
-1,376
| -29% | -$41.5K |
|
|
HPP
1090
Hudson Pacific Properties
HPP
$1.12B
| $103K | ﹤0.01% |
21,556
-113,259
| -84% | -$541K |
|
1091
D-Wave Quantum
QBTS
$5.65B
| $103K | ﹤0.01% |
104,816
-12,839
| -11% | -$12.6K |
|
|
SUM
1092
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $103K | ﹤0.01% |
2,646
+1,734
| +190% | +$67.5K |
|
|
AUGX
1093
DELISTED
Augmedix, Inc. Common Stock
AUGX
| $103K | ﹤0.01% |
44,130
+22,748
| +106% | +$53.1K |
|
1094
Alkami Technology
ALKT
$2.63B
| $102K | ﹤0.01% |
3,261
+234
| +8% | +$7.32K |
|
1095
P10
PX
$1.36B
| $102K | ﹤0.01% |
9,587
+5,072
| +112% | +$54K |
|
1096
Denali Therapeutics
DNLI
$2.17B
| $101K | ﹤0.01% |
3,475
-1,459
| -30% | -$42.4K |
|
1097
Ivanhoe Electric
IE
$1.17B
| $101K | ﹤0.01% |
+12,035
| New | +$101K |
|
1098
SuRo Capital
SSSS
$212M
| $101K | ﹤0.01% |
25,108
+18,610
| +286% | +$74.9K |
|
1099
Day One Biopharmaceuticals
DAWN
$755M
| $100K | ﹤0.01% |
7,240
-10,185
| -58% | -$141K |
|
1100
Odyssey Marine Exploration
OMEX
$78.6M
| $100K | ﹤0.01% |
+121,487
| New | +$100K |
|