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
|
+$45.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$33.2M |
| 5 |
Citigroup
C
|
+$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
+$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$111M |
| 3 |
NVIDIA
NVDA
|
+$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
+$60.9M |
| 5 |
Procter & Gamble
PG
|
+$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
Post Holdings
POST
$5.77B
| $575K | ﹤0.01% |
6,399
+5,962
| +1,364% | +$536K |
|
477
Direxion Daily Semiconductor Bear 3X Shares
SOXS
$1.28B
| $575K | ﹤0.01% |
+3,537
| New | +$575K |
|
478
Getty Images
GETY
$788M
| $574K | ﹤0.01% |
112,958
+69,833
| +162% | +$355K |
|
479
Direxion Daily Junior Gold Miners Index Bear 2X Shares
JDST
$53.1M
| $567K | ﹤0.01% |
9,559
-10,178
| -52% | -$604K |
|
480
PENN Entertainment
PENN
$2.93B
| $564K | ﹤0.01% |
+19,033
| New | +$564K |
|
481
New Oriental
EDU
$8.19B
| $563K | ﹤0.01% |
14,595
+14,065
| +2,654% | +$543K |
|
482
Toyota
TM
$264B
| $560K | ﹤0.01% |
3,957
+951
| +32% | +$135K |
|
483
Allogene Therapeutics
ALLO
$253M
| $559K | ﹤0.01% |
+113,349
| New | +$559K |
|
|
CNH
484
CNH Industrial
CNH
$14.4B
| $558K | ﹤0.01% |
+36,552
| New | +$558K |
|
485
Lindblad Expeditions
LIND
$767M
| $555K | ﹤0.01% |
58,072
+50,937
| +714% | +$487K |
|
486
Equifax
EFX
$31.2B
| $554K | ﹤0.01% |
2,734
+1,790
| +190% | +$363K |
|
487
Open Text
OTEX
$8.59B
| $553K | ﹤0.01% |
14,350
+2,830
| +25% | +$109K |
|
488
Cemex
CX
$13.6B
| $551K | ﹤0.01% |
+99,668
| New | +$551K |
|
|
BCYC
489
Bicycle Therapeutics
BCYC
$496M
| $550K | ﹤0.01% |
25,888
+11,554
| +81% | +$245K |
|
490
Banco Bradesco
BBD
$33.6B
| $549K | ﹤0.01% |
209,691
+70,394
| +51% | +$184K |
|
491
Alaska Air
ALK
$7.34B
| $545K | ﹤0.01% |
+13,008
| New | +$545K |
|
492
Amplify Cybersecurity ETF
HACK
$2.33B
| $545K | ﹤0.01% |
11,417
+9,003
| +373% | +$430K |
|
493
Global X Lithium & Battery Tech ETF
LIT
$1.18B
| $544K | ﹤0.01% |
8,574
-27,886
| -76% | -$1.77M |
|
494
Hertz
HTZ
$1.86B
| $541K | ﹤0.01% |
+33,227
| New | +$541K |
|
495
abrdn Physical Gold Shares ETF
SGOL
$5.79B
| $539K | ﹤0.01% |
+28,600
| New | +$539K |
|
496
Transmedics
TMDX
$3.6B
| $537K | ﹤0.01% |
7,094
-1,663
| -19% | -$126K |
|
497
Boston Scientific
BSX
$160B
| $536K | ﹤0.01% |
10,720
-15,091
| -58% | -$755K |
|
498
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$163M
| $533K | ﹤0.01% |
+19,896
| New | +$533K |
|
499
BioCryst Pharmaceuticals
BCRX
$1.72B
| $528K | ﹤0.01% |
63,313
+23,231
| +58% | +$194K |
|
500
Cloudflare
NET
$75.9B
| $528K | ﹤0.01% |
+8,570
| New | +$528K |
|