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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
426
Sony
SONY
$172B
| $822K | ﹤0.01% |
+45,695
| New | +$822K |
|
427
Royalty Pharma
RPRX
$15.8B
| $820K | ﹤0.01% |
+26,696
| New | +$820K |
|
428
Deutsche Bank
DB
$69.9B
| $815K | ﹤0.01% |
77,477
+727
| +0.9% | +$7.65K |
|
429
SentinelOne
S
$6B
| $810K | ﹤0.01% |
+53,706
| New | +$810K |
|
430
T Rowe Price
TROW
$23.5B
| $809K | ﹤0.01% |
7,225
+4,065
| +129% | +$455K |
|
431
JFrog
FROG
$5.76B
| $807K | ﹤0.01% |
29,168
+22,017
| +308% | +$609K |
|
432
NextDecade
NEXT
$2.16B
| $804K | ﹤0.01% |
98,003
+46,060
| +89% | +$378K |
|
|
ISEE
433
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $792K | ﹤0.01% |
20,138
-43,467
| -68% | -$1.71M |
|
434
STAAR Surgical
STAA
$1.38B
| $788K | ﹤0.01% |
15,003
+5,691
| +61% | +$299K |
|
|
BLUE
435
DELISTED
bluebird bio
BLUE
| $787K | ﹤0.01% |
11,965
-2,105
| -15% | -$138K |
|
436
iShares US Regional Banks ETF
IAT
$650M
| $786K | ﹤0.01% |
23,248
+11,543
| +99% | +$390K |
|
437
Wolfspeed
WOLF
$243M
| $786K | ﹤0.01% |
14,157
+7,275
| +106% | +$404K |
|
438
Direxion Daily Technology Bear 3x Shares
TECS
$51.2M
| $783K | ﹤0.01% |
5,713
+5,683
| +18,943% | +$779K |
|
439
Chemours
CC
$2.47B
| $780K | ﹤0.01% |
+21,148
| New | +$780K |
|
440
Global X Lithium & Battery Tech ETF
LIT
$1.12B
| $778K | ﹤0.01% |
11,970
+3,396
| +40% | +$221K |
|
441
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$895M
| $776K | ﹤0.01% |
22,267
-158,185
| -88% | -$5.51M |
|
442
Marathon Digital Holdings
MARA
$6.08B
| $771K | ﹤0.01% |
+55,645
| New | +$771K |
|
443
SPDR Portfolio S&P 1500 Composite Stock Market ETF
SPTM
$11.3B
| $770K | ﹤0.01% |
+14,145
| New | +$770K |
|
|
HRT
444
DELISTED
HireRight Holdings Corporation
HRT
| $767K | ﹤0.01% |
67,847
+67,842
| +1,356,840% | +$767K |
|
445
Boston Properties
BXP
$11.5B
| $765K | ﹤0.01% |
13,296
-16,635
| -56% | -$957K |
|
446
iShares Russell 2000 Value ETF
IWN
$11.9B
| $756K | ﹤0.01% |
+5,376
| New | +$756K |
|
447
Archer Daniels Midland
ADM
$29.2B
| $753K | ﹤0.01% |
+9,974
| New | +$753K |
|
448
Huntsman Corp
HUN
$1.91B
| $753K | ﹤0.01% |
+27,883
| New | +$753K |
|
449
Iridium Communications
IRDM
$2.03B
| $751K | ﹤0.01% |
12,105
+8,077
| +201% | +$501K |
|
450
Direxion Daily TSLA Bull 2X Shares
TSLL
$6.42B
| $747K | ﹤0.01% |
43,052
+4,358
| +11% | +$75.6K |
|