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
|
$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$82.5M |
| 3 |
Intel
INTC
|
$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
$39.4M |
| 5 |
Uber
UBER
|
$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$130M |
| 2 |
Pinduoduo
PDD
|
$95.7M |
| 3 |
Boeing
BA
|
$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
$40.7M |
| 5 |
Microsoft
MSFT
|
$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
General Motors
GM
$55.5B
| $644K | ﹤0.01% |
12,105
-157,336
| -93% | -$8.37M |
|
577
iRhythm Technologies
IRTC
$5.82B
| $643K | ﹤0.01% |
7,139
-14,666
| -67% | -$1.32M |
|
578
Plains All American Pipeline
PAA
$12.1B
| $643K | ﹤0.01% |
+37,694
| New | +$643K |
|
579
Target Hospitality
TH
$876M
| $637K | ﹤0.01% |
65,943
-11,229
| -15% | -$108K |
|
580
Akero Therapeutics
AKRO
$3.58B
| $635K | ﹤0.01% |
+22,855
| New | +$635K |
|
581
Cantaloupe
CTLP
$792M
| $634K | ﹤0.01% |
66,676
+41,391
| +164% | +$394K |
|
582
Ecopetrol
EC
$18.7B
| $630K | ﹤0.01% |
79,619
+28,798
| +57% | +$228K |
|
583
Black Stone Minerals
BSM
$2.53B
| $629K | ﹤0.01% |
43,124
-3,689
| -8% | -$53.8K |
|
|
OKLO
584
Oklo
OKLO
$10.3B
| $624K | ﹤0.01% |
29,407
+24,266
| +472% | +$515K |
|
585
Baxter International
BAX
$12.5B
| $619K | ﹤0.01% |
+21,250
| New | +$619K |
|
586
Arista Networks
ANET
$180B
| $618K | ﹤0.01% |
5,596
+2,748
| +96% | +$303K |
|
587
Rogers Corp
ROG
$1.43B
| $618K | ﹤0.01% |
6,087
+62
| +1% | +$6.3K |
|
588
Global X Lithium & Battery Tech ETF
LIT
$1.16B
| $617K | ﹤0.01% |
15,152
+14,963
| +7,917% | +$609K |
|
589
ProShares Ultra Bitcoin ETF
BITU
$1.09B
| $606K | ﹤0.01% |
12,275
+8,084
| +193% | +$399K |
|
|
HSAI
590
Hesai Group
HSAI
$3.52B
| $600K | ﹤0.01% |
+43,484
| New | +$600K |
|
591
Beazer Homes USA
BZH
$781M
| $596K | ﹤0.01% |
21,715
+20,056
| +1,209% | +$550K |
|
592
Marvell Technology
MRVL
$54.6B
| $593K | ﹤0.01% |
5,375
-31,725
| -86% | -$3.5M |
|
593
Noble Corp
NE
$4.54B
| $592K | ﹤0.01% |
+18,872
| New | +$592K |
|
594
Allegiant Air
ALGT
$1.18B
| $590K | ﹤0.01% |
6,269
-14,128
| -69% | -$1.33M |
|
595
ProShares Ultra Semiconductors
USD
$1.33B
| $589K | ﹤0.01% |
9,050
+3,506
| +63% | +$228K |
|
596
Vanguard S&P 500 Growth ETF
VOOG
$19.3B
| $585K | ﹤0.01% |
+1,600
| New | +$585K |
|
597
Globalstar
GSAT
$3.96B
| $583K | ﹤0.01% |
18,790
+5,482
| +41% | +$170K |
|
598
Saic
SAIC
$4.83B
| $583K | ﹤0.01% |
+5,223
| New | +$583K |
|
599
Stanley Black & Decker
SWK
$12.1B
| $582K | ﹤0.01% |
7,250
-58,356
| -89% | -$4.68M |
|
600
Compass
COMP
$5.07B
| $577K | ﹤0.01% |
+98,793
| New | +$577K |
|