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
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
BPT
776
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $143K | ﹤0.01% |
+9,283
| New | +$143K |
|
777
iShares Expanded Tech Sector ETF
IGM
$8.97B
| $143K | ﹤0.01% |
+3,990
| New | +$143K |
|
|
CCMP
778
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $142K | ﹤0.01% |
1,291
+394
| +44% | +$43.3K |
|
779
iShares Russell 2000 Growth ETF
IWO
$12.7B
| $141K | ﹤0.01% |
+702
| New | +$141K |
|
780
Coca-Cola Femsa
KOF
$18.1B
| $141K | ﹤0.01% |
2,272
-190
| -8% | -$11.8K |
|
|
NVEE
781
DELISTED
NV5 Global
NVEE
| $141K | ﹤0.01% |
6,940
-11,336
| -62% | -$230K |
|
782
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.35B
| $140K | ﹤0.01% |
5,000
-175,360
| -97% | -$4.91M |
|
783
Avantor
AVTR
$8.73B
| $140K | ﹤0.01% |
+7,363
| New | +$140K |
|
|
ENBL
784
DELISTED
ENABLE MIDSTREAM PARTNERS, LP
ENBL
| $140K | ﹤0.01% |
10,242
+3,916
| +62% | +$53.5K |
|
|
CBLK
785
DELISTED
Carbon Black, Inc. Common Stock
CBLK
| $140K | ﹤0.01% |
8,380
-12,551
| -60% | -$210K |
|
786
Cummins
CMI
$56.6B
| $138K | ﹤0.01% |
810
-7,569
| -90% | -$1.29M |
|
787
Fox Factory Holding Corp
FOXF
$1.19B
| $137K | ﹤0.01% |
+1,661
| New | +$137K |
|
|
BID
788
DELISTED
Sotheby's
BID
| $136K | ﹤0.01% |
+2,344
| New | +$136K |
|
789
Exelixis
EXEL
$10.5B
| $134K | ﹤0.01% |
+6,289
| New | +$134K |
|
790
Schwab US Broad Market ETF
SCHB
$36.9B
| $134K | ﹤0.01% |
11,466
-2,322
| -17% | -$27.1K |
|
791
Trip.com Group
TCOM
$48.5B
| $133K | ﹤0.01% |
+3,607
| New | +$133K |
|
|
RST
792
DELISTED
ROSETTA STONE INC
RST
| $133K | ﹤0.01% |
5,830
-2,453
| -30% | -$56K |
|
793
Scansource
SCSC
$983M
| $132K | ﹤0.01% |
4,071
+1,760
| +76% | +$57.1K |
|
794
Sun Communities
SUI
$16.4B
| $131K | ﹤0.01% |
+1,023
| New | +$131K |
|
|
MDRX
795
DELISTED
Veradigm Inc. Common Stock
MDRX
| $131K | ﹤0.01% |
+11,274
| New | +$131K |
|
796
iShares MSCI Thailand ETF
THD
$235M
| $130K | ﹤0.01% |
+1,370
| New | +$130K |
|
|
ECHO
797
DELISTED
Echo Global Logistics, Inc.
ECHO
| $130K | ﹤0.01% |
6,274
+181
| +3% | +$3.75K |
|
798
Aegon
AEG
$12.2B
| $129K | ﹤0.01% |
+29,573
| New | +$129K |
|
|
TWTR
799
DELISTED
Twitter, Inc.
TWTR
| $129K | ﹤0.01% |
3,704
+942
| +34% | +$32.8K |
|
|
DESP
800
DELISTED
Despegar.com
DESP
| $127K | ﹤0.01% |
9,164
+4,877
| +114% | +$67.6K |
|