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 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
LSI
501
DELISTED
Life Storage, Inc.
LSI
| $445K | ﹤0.01% |
7,022
-10,777
| -61% | -$683K |
|
502
Unum
UNM
$12.6B
| $442K | ﹤0.01% |
+11,322
| New | +$442K |
|
503
Heidrick & Struggles
HSII
$1.02B
| $441K | ﹤0.01% |
13,053
+12,948
| +12,331% | +$437K |
|
504
Rush Enterprises Class A
RUSHA
$4.42B
| $441K | ﹤0.01% |
25,277
+19,080
| +308% | +$333K |
|
505
BBVA Argentina
BBAR
$2B
| $439K | ﹤0.01% |
+37,668
| New | +$439K |
|
506
AGNC Investment
AGNC
$10.7B
| $438K | ﹤0.01% |
23,541
+18,394
| +357% | +$342K |
|
507
Herbalife
HLF
$958M
| $438K | ﹤0.01% |
8,034
-2,881
| -26% | -$157K |
|
508
SM Energy
SM
$3.14B
| $438K | ﹤0.01% |
13,912
-4,685
| -25% | -$148K |
|
|
GLIBA
509
DELISTED
GCI Liberty, Inc. Class A Common Stock (DE)
GLIBA
| $437K | ﹤0.01% |
8,570
+8,112
| +1,771% | +$414K |
|
|
QIWI
510
DELISTED
QIWI PLC
QIWI
| $436K | ﹤0.01% |
33,123
+4,603
| +16% | +$60.6K |
|
511
TripAdvisor
TRIP
$2.06B
| $435K | ﹤0.01% |
+8,537
| New | +$435K |
|
512
Weyerhaeuser
WY
$18.1B
| $433K | ﹤0.01% |
+13,443
| New | +$433K |
|
513
Universal Display
OLED
$6.52B
| $429K | ﹤0.01% |
3,643
-28,235
| -89% | -$3.32M |
|
|
IMGN
514
DELISTED
Immunogen Inc
IMGN
| $429K | ﹤0.01% |
45,397
+16,321
| +56% | +$154K |
|
515
Ball Corp
BALL
$13.6B
| $428K | ﹤0.01% |
+9,750
| New | +$428K |
|
516
Etsy
ETSY
$5.73B
| $428K | ﹤0.01% |
8,348
-55,695
| -87% | -$2.86M |
|
517
Prologis
PLD
$103B
| $428K | ﹤0.01% |
6,328
+5,009
| +380% | +$339K |
|
518
Nabors Industries
NBR
$619M
| $422K | ﹤0.01% |
1,371
-365
| -21% | -$112K |
|
519
Adient
ADNT
$1.92B
| $421K | ﹤0.01% |
10,732
+4,526
| +73% | +$178K |
|
520
Intellia Therapeutics
NTLA
$1.21B
| $421K | ﹤0.01% |
14,715
-9,324
| -39% | -$267K |
|
|
CBM
521
DELISTED
Cambrex Corporation
CBM
| $421K | ﹤0.01% |
6,167
+3,947
| +178% | +$269K |
|
522
Qorvo
QRVO
$8.26B
| $419K | ﹤0.01% |
5,453
-11,283
| -67% | -$867K |
|
|
EVRI
523
DELISTED
Everi Holdings
EVRI
| $417K | ﹤0.01% |
45,554
+8,631
| +23% | +$79K |
|
524
E.W. Scripps
SSP
$246M
| $416K | ﹤0.01% |
+25,237
| New | +$416K |
|
525
Northern Trust
NTRS
$24.2B
| $415K | ﹤0.01% |
+4,066
| New | +$415K |
|