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 |
Apple
AAPL
|
+$35.2M |
| 2 |
Micron Technology
MU
|
+$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$29.5M |
| 4 |
NVIDIA
NVDA
|
+$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$33.4M |
| 3 |
Tesla
TSLA
|
+$19.8M |
| 4 |
Netflix
NFLX
|
+$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
+$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
JBGS
676
JBG SMITH
JBGS
$1.42B
| $246K | ﹤0.01% |
6,762
+183
| +3% | +$6.66K |
|
|
CTB
677
DELISTED
Cooper Tire & Rubber Co.
CTB
| $246K | ﹤0.01% |
+9,356
| New | +$246K |
|
678
BRF SA
BRFS
$5.67B
| $245K | ﹤0.01% |
+52,514
| New | +$245K |
|
679
Safety Insurance
SAFT
$1.1B
| $243K | ﹤0.01% |
2,856
+2,584
| +950% | +$220K |
|
680
iShares MSCI Mexico ETF
EWW
$1.85B
| $240K | ﹤0.01% |
+5,096
| New | +$240K |
|
681
LCI Industries
LCII
$2.55B
| $240K | ﹤0.01% |
+2,669
| New | +$240K |
|
682
Credit Acceptance
CACC
$5.77B
| $239K | ﹤0.01% |
+679
| New | +$239K |
|
683
Chegg
CHGG
$169M
| $239K | ﹤0.01% |
+8,611
| New | +$239K |
|
684
Targa Resources
TRGP
$34.5B
| $234K | ﹤0.01% |
4,730
-13,466
| -74% | -$666K |
|
|
CYB
685
DELISTED
WisdomTree Chinese Yuan Strategy Fund
CYB
| $234K | ﹤0.01% |
8,996
+8,296
| +1,185% | +$216K |
|
686
Covenant Logistics
CVLG
$597M
| $233K | ﹤0.01% |
14,816
-30,344
| -67% | -$477K |
|
|
GASL
687
DELISTED
Direxion Daily Natural Gas Related Bull 3X Shares
GASL
| $233K | ﹤0.01% |
19
+18
| +1,800% | +$221K |
|
688
Regency Centers
REG
$13.3B
| $232K | ﹤0.01% |
3,745
-9,139
| -71% | -$566K |
|
|
BEAT
689
DELISTED
BioTelemetry, Inc.
BEAT
| $232K | ﹤0.01% |
+5,169
| New | +$232K |
|
690
Autohome
ATHM
$3.38B
| $231K | ﹤0.01% |
2,296
+527
| +30% | +$53K |
|
691
Boston Scientific
BSX
$160B
| $230K | ﹤0.01% |
+7,057
| New | +$230K |
|
692
Freeport-McMoran
FCX
$67B
| $229K | ﹤0.01% |
13,306
-40,870
| -75% | -$703K |
|
693
Ambarella
AMBA
$3.59B
| $228K | ﹤0.01% |
+5,909
| New | +$228K |
|
694
Invesco DB US Dollar Index Bullish Fund
UUP
$173M
| $228K | ﹤0.01% |
9,146
-10,431
| -53% | -$260K |
|
695
Kimberly-Clark
KMB
$43.1B
| $227K | ﹤0.01% |
+2,162
| New | +$227K |
|
|
ECYT
696
DELISTED
Endocyte, Inc. Common Stock
ECYT
| $227K | ﹤0.01% |
+16,492
| New | +$227K |
|
697
Williams Companies
WMB
$69.4B
| $226K | ﹤0.01% |
+8,368
| New | +$226K |
|
698
Kimco Realty
KIM
$15.3B
| $225K | ﹤0.01% |
13,268
+9,248
| +230% | +$157K |
|
699
Macerich
MAC
$4.68B
| $224K | ﹤0.01% |
3,954
+2,154
| +120% | +$122K |
|
|
NYMX
700
DELISTED
Nymox Pharmaceutical Corp
NYMX
| $224K | ﹤0.01% |
66,880
+57,227
| +593% | +$192K |
|