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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
401
Axos Financial
AX
$5B
| $1.24M | ﹤0.01% |
22,891
-66,052
| -74% | -$3.57M |
|
402
GameStop
GME
$11.7B
| $1.23M | ﹤0.01% |
+98,379
| New | +$1.23M |
|
403
Fiverr
FVRR
$985M
| $1.23M | ﹤0.01% |
+58,404
| New | +$1.23M |
|
404
Tenet Healthcare
THC
$16.8B
| $1.23M | ﹤0.01% |
11,702
-2,966
| -20% | -$312K |
|
405
Axsome Therapeutics
AXSM
$5.79B
| $1.23M | ﹤0.01% |
15,386
-5,427
| -26% | -$433K |
|
406
Bloom Energy
BE
$19.9B
| $1.22M | ﹤0.01% |
108,495
+61,498
| +131% | +$691K |
|
407
Chart Industries
GTLS
$8.97B
| $1.2M | ﹤0.01% |
+7,277
| New | +$1.2M |
|
408
BlackLine
BL
$3.28B
| $1.19M | ﹤0.01% |
18,429
-26,023
| -59% | -$1.68M |
|
409
AeroVironment
AVAV
$13.9B
| $1.18M | ﹤0.01% |
7,699
+4,870
| +172% | +$746K |
|
410
Stride
LRN
$6.18B
| $1.18M | ﹤0.01% |
+18,653
| New | +$1.18M |
|
411
Vital Energy
VTLE
$608M
| $1.17M | ﹤0.01% |
22,319
+6,968
| +45% | +$366K |
|
412
Lumentum
LITE
$11.8B
| $1.17M | ﹤0.01% |
24,669
+10,591
| +75% | +$501K |
|
413
Direxion Daily NVDA Bull 2X Shares
NVDU
$723M
| $1.17M | ﹤0.01% |
17,748
+17,705
| +41,174% | +$1.17M |
|
414
JFrog
FROG
$5.81B
| $1.16M | ﹤0.01% |
26,289
-3,808
| -13% | -$168K |
|
|
SWTX
415
DELISTED
SpringWorks Therapeutics
SWTX
| $1.16M | ﹤0.01% |
23,591
+20,330
| +623% | +$1M |
|
416
Sempra
SRE
$54.3B
| $1.16M | ﹤0.01% |
16,135
+11,878
| +279% | +$852K |
|
417
ODDITY Tech
ODD
$3.49B
| $1.15M | ﹤0.01% |
26,523
+25,819
| +3,667% | +$1.12M |
|
418
WEC Energy
WEC
$35.4B
| $1.15M | ﹤0.01% |
13,969
-22,548
| -62% | -$1.85M |
|
419
AT&T
T
$207B
| $1.14M | ﹤0.01% |
64,856
-702,376
| -92% | -$12.4M |
|
|
TIGR
420
UP Fintech Holding
TIGR
$1.98B
| $1.14M | ﹤0.01% |
+330,997
| New | +$1.14M |
|
421
Entergy
ETR
$39.6B
| $1.13M | ﹤0.01% |
21,458
-15,138
| -41% | -$799K |
|
422
Encompass Health
EHC
$12.5B
| $1.13M | ﹤0.01% |
+13,697
| New | +$1.13M |
|
423
Edison International
EIX
$21.4B
| $1.13M | ﹤0.01% |
15,981
-11,786
| -42% | -$833K |
|
424
Dutch Bros
BROS
$7.44B
| $1.13M | ﹤0.01% |
+34,188
| New | +$1.13M |
|
425
Equity Residential
EQR
$24.8B
| $1.13M | ﹤0.01% |
17,870
-1,819
| -9% | -$115K |
|