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 |
Invesco QQQ Trust
QQQ
|
+$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$75.9M |
| 3 |
NVIDIA
NVDA
|
+$42.6M |
| 4 |
Netflix
NFLX
|
+$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$24.3M |
| 5 |
Broadcom
AVGO
|
+$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
651
ProShares UltraShort Real Estate
SRS
$22.2M
| $274K | ﹤0.01% |
2,155
+1,919
| +813% | +$244K |
|
652
Compañía de Minas Buenaventura
BVN
$5.08B
| $273K | ﹤0.01% |
29,960
+7,661
| +34% | +$69.8K |
|
653
Cracker Barrel
CBRL
$1.12B
| $273K | ﹤0.01% |
+2,470
| New | +$273K |
|
654
Rithm Capital
RITM
$6.64B
| $273K | ﹤0.01% |
+36,827
| New | +$273K |
|
|
WW
655
DELISTED
WW International
WW
| $273K | ﹤0.01% |
10,785
+10,585
| +5,293% | +$268K |
|
656
Xerox
XRX
$468M
| $273K | ﹤0.01% |
+17,918
| New | +$273K |
|
657
ProShares UltraShort MSCI Brazil Capped
BZQ
$5.58M
| $270K | ﹤0.01% |
+3,882
| New | +$270K |
|
658
Royal Gold
RGLD
$12.3B
| $269K | ﹤0.01% |
2,169
-24,335
| -92% | -$3.02M |
|
659
Adtran
ADTN
$830M
| $268K | ﹤0.01% |
+24,607
| New | +$268K |
|
660
Cardlytics
CDLX
$48.5M
| $268K | ﹤0.01% |
+3,830
| New | +$268K |
|
661
Commault Systems
CVLT
$8.23B
| $267K | ﹤0.01% |
6,906
+6,048
| +705% | +$234K |
|
662
Norfolk Southern
NSC
$61.8B
| $267K | ﹤0.01% |
+1,523
| New | +$267K |
|
|
CATM
663
DELISTED
Cardtronics plc Class A Ordinary Shares (UK)
CATM
| $266K | ﹤0.01% |
11,109
-46,271
| -81% | -$1.11M |
|
664
Independence Realty Trust
IRT
$4.18B
| $264K | ﹤0.01% |
23,040
+15,882
| +222% | +$182K |
|
665
Smith & Wesson
SWBI
$390M
| $262K | ﹤0.01% |
15,874
+12,719
| +403% | +$210K |
|
666
Zillow
ZG
$21B
| $260K | ﹤0.01% |
+4,526
| New | +$260K |
|
667
Builders FirstSource
BLDR
$15.5B
| $259K | ﹤0.01% |
12,534
+11,335
| +945% | +$234K |
|
668
Kimco Realty
KIM
$15.3B
| $259K | ﹤0.01% |
20,225
+15,683
| +345% | +$201K |
|
669
Papa John's
PZZA
$1.63B
| $259K | ﹤0.01% |
3,265
-15,368
| -82% | -$1.22M |
|
|
MNTV
670
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $259K | ﹤0.01% |
11,044
-27,104
| -71% | -$636K |
|
|
GRUB
671
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $259K | ﹤0.01% |
1,844
+1,794
| +3,588% | +$252K |
|
|
CHU
672
DELISTED
China Unicom (HONG KONG) Limited
CHU
| $259K | ﹤0.01% |
47,601
+46,664
| +4,980% | +$254K |
|
673
Steelcase
SCS
$1.98B
| $258K | ﹤0.01% |
21,470
+757
| +4% | +$9.1K |
|
|
ZGNX
674
DELISTED
Zogenix, Inc.
ZGNX
| $258K | ﹤0.01% |
9,588
+9,038
| +1,643% | +$243K |
|
675
Park Hotels & Resorts
PK
$2.34B
| $257K | ﹤0.01% |
+26,050
| New | +$257K |
|