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 | |
|---|---|---|---|---|---|---|
|
VSTO
401
DELISTED
Vista Outdoor Inc.
VSTO
| $1.23M | ﹤0.01% |
+32,550
| New | +$1.23M |
|
402
Rockwell Automation
ROK
$38.8B
| $1.22M | ﹤0.01% |
+4,439
| New | +$1.22M |
|
403
Cummins
CMI
$54.8B
| $1.21M | ﹤0.01% |
4,385
-9,098
| -67% | -$2.52M |
|
404
iShares Expanded Tech-Software Sector ETF
IGV
$10.1B
| $1.21M | ﹤0.01% |
+13,955
| New | +$1.21M |
|
405
Freshworks
FRSH
$3.83B
| $1.21M | ﹤0.01% |
95,288
+78,376
| +463% | +$994K |
|
406
Jefferies Financial Group
JEF
$13.2B
| $1.21M | ﹤0.01% |
24,273
+16,929
| +231% | +$842K |
|
407
Virtu Financial
VIRT
$3.26B
| $1.21M | ﹤0.01% |
53,776
-51,028
| -49% | -$1.15M |
|
|
TEN
408
Tsakos Energy Navigation Ltd.
TEN
$690M
| $1.2M | ﹤0.01% |
41,066
-2,995
| -7% | -$87.7K |
|
|
EH
409
EHang Holdings
EH
$1.17B
| $1.2M | ﹤0.01% |
88,271
+3,264
| +4% | +$44.3K |
|
410
Parker-Hannifin
PH
$96.3B
| $1.19M | ﹤0.01% |
+2,348
| New | +$1.19M |
|
411
Genuine Parts
GPC
$19.5B
| $1.19M | ﹤0.01% |
+8,581
| New | +$1.19M |
|
412
-1x Short VIX Futures ETF
SVIX
$191M
| $1.18M | ﹤0.01% |
24,790
+18,619
| +302% | +$887K |
|
413
AXIS Capital
AXS
$7.67B
| $1.18M | ﹤0.01% |
+16,684
| New | +$1.18M |
|
414
Primoris Services
PRIM
$6.26B
| $1.18M | ﹤0.01% |
+23,596
| New | +$1.18M |
|
415
MarineMax
HZO
$566M
| $1.18M | ﹤0.01% |
+36,327
| New | +$1.18M |
|
416
Ford
F
$46.5B
| $1.16M | ﹤0.01% |
92,615
-872,007
| -90% | -$10.9M |
|
417
GitLab
GTLB
$7.99B
| $1.16M | ﹤0.01% |
23,344
-25,317
| -52% | -$1.26M |
|
418
ACM Research
ACMR
$1.73B
| $1.16M | ﹤0.01% |
+50,265
| New | +$1.16M |
|
419
NetEase
NTES
$91.2B
| $1.16M | ﹤0.01% |
12,127
+8,658
| +250% | +$827K |
|
420
Enbridge
ENB
$105B
| $1.16M | ﹤0.01% |
32,481
+7,216
| +29% | +$257K |
|
421
CVR Partners
UAN
$922M
| $1.15M | ﹤0.01% |
15,264
+12,645
| +483% | +$956K |
|
422
BILL Holdings
BILL
$5.1B
| $1.15M | ﹤0.01% |
21,866
-27,745
| -56% | -$1.46M |
|
423
Real Estate Select Sector SPDR Fund
XLRE
$7.72B
| $1.13M | ﹤0.01% |
+29,490
| New | +$1.13M |
|
424
Cadence Design Systems
CDNS
$98.3B
| $1.13M | ﹤0.01% |
+3,673
| New | +$1.13M |
|
425
Post Holdings
POST
$5.77B
| $1.13M | ﹤0.01% |
10,824
-19,036
| -64% | -$1.98M |
|