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
|
+$216M |
| 2 |
Apple
AAPL
|
+$159M |
| 3 |
Broadcom
AVGO
|
+$128M |
| 4 |
Booking.com
BKNG
|
+$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
+$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$141M |
| 2 |
Amazon
AMZN
|
+$53.1M |
| 3 |
TSMC
TSM
|
+$45.7M |
| 4 |
Netflix
NFLX
|
+$45.3M |
| 5 |
Pfizer
PFE
|
+$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
626
Neogen
NEOG
$1.23B
| $478K | ﹤0.01% |
100,028
+73,024
| +270% | +$349K |
|
627
Prime Medicine
PRME
$693M
| $478K | ﹤0.01% |
193,615
+185,239
| +2,212% | +$457K |
|
628
W.P. Carey
WPC
$14.7B
| $477K | ﹤0.01% |
7,650
-936
| -11% | -$58.4K |
|
629
AZZ Inc
AZZ
$3.47B
| $475K | ﹤0.01% |
5,038
+4,751
| +1,655% | +$448K |
|
630
Shake Shack
SHAK
$3.93B
| $475K | ﹤0.01% |
3,384
-9,097
| -73% | -$1.28M |
|
631
Perrigo
PRGO
$3.07B
| $474K | ﹤0.01% |
+17,761
| New | +$474K |
|
632
Cogent Communications
CCOI
$1.81B
| $472K | ﹤0.01% |
+9,803
| New | +$472K |
|
633
Guess, Inc.
GES
$881M
| $472K | ﹤0.01% |
39,095
+37,283
| +2,058% | +$450K |
|
634
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$165M
| $469K | ﹤0.01% |
+12,716
| New | +$469K |
|
635
Colgate-Palmolive
CL
$68B
| $466K | ﹤0.01% |
5,132
-18,752
| -79% | -$1.7M |
|
636
Zebra Technologies
ZBRA
$16B
| $460K | ﹤0.01% |
1,494
+1,284
| +611% | +$395K |
|
637
Cleveland-Cliffs
CLF
$5.45B
| $458K | ﹤0.01% |
60,323
-461,300
| -88% | -$3.5M |
|
|
BITF
638
Bitfarms
BITF
$707M
| $454K | ﹤0.01% |
541,468
+253,852
| +88% | +$213K |
|
639
Anywhere Real Estate
HOUS
$729M
| $453K | ﹤0.01% |
125,324
+54,251
| +76% | +$196K |
|
640
Nordic American Tanker
NAT
$688M
| $453K | ﹤0.01% |
172,498
-123,736
| -42% | -$325K |
|
641
NextNav
NN
$2.1B
| $453K | ﹤0.01% |
29,812
-25,739
| -46% | -$391K |
|
642
Qiagen
QGEN
$10.3B
| $450K | ﹤0.01% |
9,377
-6,356
| -40% | -$305K |
|
643
Teucrium Wheat Fund
WEAT
$117M
| $449K | ﹤0.01% |
101,276
+19,719
| +24% | +$87.4K |
|
644
PIMCO 25+ Year Zero Coupon US Treasury Index Exchange-Traded Fund
ZROZ
$1.7B
| $447K | ﹤0.01% |
6,671
+1,760
| +36% | +$118K |
|
645
Peabody Energy
BTU
$2.24B
| $445K | ﹤0.01% |
+33,169
| New | +$445K |
|
646
Mr. Cooper
COOP
$13.8B
| $445K | ﹤0.01% |
+2,989
| New | +$445K |
|
647
Li Auto
LI
$24.1B
| $445K | ﹤0.01% |
16,423
-7,105
| -30% | -$193K |
|
648
Stifel
SF
$11.5B
| $445K | ﹤0.01% |
4,289
+3,511
| +451% | +$364K |
|
649
Amphenol
APH
$135B
| $444K | ﹤0.01% |
+4,501
| New | +$444K |
|
650
Royal Gold
RGLD
$12.3B
| $443K | ﹤0.01% |
+2,492
| New | +$443K |
|