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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
VNE
551
DELISTED
Veoneer, Inc.
VNE
| $952K | ﹤0.01% |
+26,858
| New | +$952K |
|
552
LoveSac
LOVE
$295M
| $951K | ﹤0.01% |
14,355
+11,854
| +474% | +$785K |
|
553
Cognyte Software
CGNT
$605M
| $950K | ﹤0.01% |
60,688
+57,175
| +1,628% | +$895K |
|
554
Mattel
MAT
$5.74B
| $950K | ﹤0.01% |
44,103
+3,076
| +7% | +$66.3K |
|
555
VanEck Gold Miners ETF
GDX
$20.6B
| $949K | ﹤0.01% |
29,642
-186,100
| -86% | -$5.96M |
|
556
Opko Health
OPK
$1.13B
| $946K | ﹤0.01% |
+196,852
| New | +$946K |
|
557
Athira Pharma
ATHA
$15.2M
| $942K | ﹤0.01% |
72,368
+42,894
| +146% | +$558K |
|
558
iShares Global Clean Energy ETF
ICLN
$1.58B
| $941K | ﹤0.01% |
44,459
-104,568
| -70% | -$2.21M |
|
559
Urban Outfitters
URBN
$6.27B
| $941K | ﹤0.01% |
+32,079
| New | +$941K |
|
560
Xeris Biopharma Holdings
XERS
$1.25B
| $941K | ﹤0.01% |
321,395
+308,466
| +2,386% | +$903K |
|
561
Cerence
CRNC
$405M
| $939K | ﹤0.01% |
+12,263
| New | +$939K |
|
|
CNH
562
CNH Industrial
CNH
$14B
| $935K | ﹤0.01% |
55,303
+24,979
| +82% | +$422K |
|
|
AVLR
563
DELISTED
Avalara, Inc.
AVLR
| $933K | ﹤0.01% |
+7,229
| New | +$933K |
|
564
Teledyne Technologies
TDY
$25.6B
| $929K | ﹤0.01% |
+2,128
| New | +$929K |
|
565
Cemex
CX
$13.4B
| $926K | ﹤0.01% |
+136,631
| New | +$926K |
|
566
Adtran
ADTN
$810M
| $924K | ﹤0.01% |
40,497
+38,595
| +2,029% | +$881K |
|
|
OSH
567
DELISTED
Oak Street Health, Inc.
OSH
| $915K | ﹤0.01% |
+27,612
| New | +$915K |
|
568
Direxion Daily Emerging Markets Bull 3X Shares
EDC
$92.3M
| $911K | ﹤0.01% |
12,324
-13,382
| -52% | -$989K |
|
|
KL
569
DELISTED
Kirkland Lake Gold Ltd Ordinary
KL
| $911K | ﹤0.01% |
21,723
-6,573
| -23% | -$276K |
|
|
ESMT
570
DELISTED
EngageSmart, Inc.
ESMT
| $910K | ﹤0.01% |
+37,755
| New | +$910K |
|
571
Vir Biotechnology
VIR
$718M
| $908K | ﹤0.01% |
21,698
+17,311
| +395% | +$724K |
|
|
GOOS
572
Canada Goose Holdings
GOOS
$1.42B
| $905K | ﹤0.01% |
24,437
-11,671
| -32% | -$432K |
|
573
PAR Technology
PAR
$1.86B
| $904K | ﹤0.01% |
17,136
+12,181
| +246% | +$643K |
|
574
Edwards Lifesciences
EW
$45.8B
| $903K | ﹤0.01% |
6,972
-24,620
| -78% | -$3.19M |
|
575
ARK Web x.0 ETF
ARKW
$2.4B
| $902K | ﹤0.01% |
7,611
-799
| -10% | -$94.7K |
|