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
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Perion Network
PERI
$415M
| $683K | ﹤0.01% |
81,909
-2,126
| -3% | -$17.7K |
|
552
Iovance Biotherapeutics
IOVA
$861M
| $679K | ﹤0.01% |
84,722
+51,527
| +155% | +$413K |
|
553
ProShares Ultra Bloomberg Crude Oil
UCO
$362M
| $679K | ﹤0.01% |
20,287
+13,602
| +203% | +$455K |
|
554
Revolution Medicines
RVMD
$7.56B
| $673K | ﹤0.01% |
17,344
+7,695
| +80% | +$299K |
|
555
Designer Brands
DBI
$229M
| $667K | ﹤0.01% |
97,739
+96,873
| +11,186% | +$661K |
|
556
Travere Therapeutics
TVTX
$2.43B
| $665K | ﹤0.01% |
80,989
+69,591
| +611% | +$571K |
|
557
InterDigital
IDCC
$7.7B
| $657K | ﹤0.01% |
+5,644
| New | +$657K |
|
558
Vivid Seats
SEAT
$96.5M
| $650K | ﹤0.01% |
5,660
+1,265
| +29% | +$145K |
|
|
TWO
559
Two Harbors Investment
TWO
$1.06B
| $650K | ﹤0.01% |
+49,263
| New | +$650K |
|
|
HPP
560
Hudson Pacific Properties
HPP
$1.1B
| $648K | ﹤0.01% |
134,815
-136,632
| -50% | -$657K |
|
561
Petco
WOOF
$1B
| $648K | ﹤0.01% |
+171,550
| New | +$648K |
|
562
Mitek Systems
MITK
$454M
| $645K | ﹤0.01% |
57,779
+36,325
| +169% | +$406K |
|
|
ITCI
563
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $645K | ﹤0.01% |
9,430
-4,223
| -31% | -$289K |
|
564
TC Energy
TRP
$54B
| $644K | ﹤0.01% |
+17,011
| New | +$644K |
|
565
TETRA Technologies
TTI
$640M
| $643K | ﹤0.01% |
186,010
+101,444
| +120% | +$351K |
|
|
AY
566
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $643K | ﹤0.01% |
29,310
+17,034
| +139% | +$374K |
|
567
Jacobs Solutions
J
$17.3B
| $642K | ﹤0.01% |
+5,564
| New | +$642K |
|
568
Freshpet
FRPT
$2.61B
| $636K | ﹤0.01% |
4,916
-3,897
| -44% | -$504K |
|
569
Perrigo
PRGO
$3.04B
| $631K | ﹤0.01% |
24,605
-87,605
| -78% | -$2.25M |
|
570
Rubrik
RBRK
$15.6B
| $631K | ﹤0.01% |
+20,588
| New | +$631K |
|
571
Regal Rexnord
RRX
$9.39B
| $622K | ﹤0.01% |
4,602
-2,871
| -38% | -$388K |
|
572
Boston Properties
BXP
$11.7B
| $621K | ﹤0.01% |
10,095
-26,743
| -73% | -$1.65M |
|
573
Pitney Bowes
PBI
$1.96B
| $619K | ﹤0.01% |
121,958
+121,724
| +52,019% | +$618K |
|
574
Cognyte Software
CGNT
$603M
| $613K | ﹤0.01% |
80,284
+71,476
| +811% | +$546K |
|
575
TTM Technologies
TTMI
$5.11B
| $611K | ﹤0.01% |
31,489
+28,915
| +1,123% | +$561K |
|