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 |
Apple
AAPL
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1026
Rocket Lab Corporation Common Stock
RKLB
$23.4B
| $136K | ﹤0.01% |
36,097
-117,460
| -76% | -$443K |
|
1027
Shoals Technologies Group
SHLS
$1.16B
| $136K | ﹤0.01% |
+8,278
| New | +$136K |
|
|
SWTX
1028
DELISTED
SpringWorks Therapeutics
SWTX
| $136K | ﹤0.01% |
+5,531
| New | +$136K |
|
1029
ProShares UltraPro Russell2000
URTY
$414M
| $136K | ﹤0.01% |
3,480
-2,939
| -46% | -$115K |
|
|
TPTX
1030
DELISTED
Turning Point Therapeutics, Inc. Common Stock
TPTX
| $136K | ﹤0.01% |
1,818
+569
| +46% | +$42.6K |
|
|
JJC
1031
DELISTED
iPath Series B Bloomberg Copper Subindex Total ReturnSM ETN
JJC
| $136K | ﹤0.01% |
7,383
+613
| +9% | +$11.3K |
|
1032
Denny's
DENN
$270M
| $135K | ﹤0.01% |
+15,629
| New | +$135K |
|
1033
Kodiak Sciences
KOD
$524M
| $135K | ﹤0.01% |
17,748
+10,915
| +160% | +$83K |
|
1034
nLIGHT
LASR
$1.46B
| $135K | ﹤0.01% |
13,228
+10,402
| +368% | +$106K |
|
1035
Enovix
ENVX
$1.74B
| $134K | ﹤0.01% |
+17,258
| New | +$134K |
|
|
GTM
1036
ZoomInfo Technologies
GTM
$3.74B
| $134K | ﹤0.01% |
4,033
+4,030
| +134,333% | +$134K |
|
1037
Tronox
TROX
$793M
| $133K | ﹤0.01% |
+7,970
| New | +$133K |
|
|
AXNX
1038
DELISTED
Axonics, Inc. Common Stock
AXNX
| $133K | ﹤0.01% |
2,361
+669
| +40% | +$37.7K |
|
1039
Diana Shipping
DSX
$217M
| $132K | ﹤0.01% |
34,646
+7,072
| +26% | +$26.9K |
|
1040
Qfin Holdings, Inc. American Depositary Shares
QFIN
$3.81B
| $132K | ﹤0.01% |
7,633
-23,234
| -75% | -$402K |
|
1041
Ardmore Shipping
ASC
$502M
| $131K | ﹤0.01% |
18,905
+4,681
| +33% | +$32.4K |
|
1042
Edgewell Personal Care
EPC
$1.02B
| $131K | ﹤0.01% |
3,809
+2,442
| +179% | +$84K |
|
1043
Saic
SAIC
$4.9B
| $130K | ﹤0.01% |
+1,403
| New | +$130K |
|
1044
WaFd
WAFD
$2.49B
| $130K | ﹤0.01% |
+4,362
| New | +$130K |
|
1045
Celularity
CELU
$62.2M
| $129K | ﹤0.01% |
3,806
+3,801
| +76,020% | +$129K |
|
1046
Maravai LifeSciences
MRVI
$404M
| $129K | ﹤0.01% |
4,550
+4,193
| +1,175% | +$119K |
|
1047
Invesco DB Base Metals Fund
DBB
$123M
| $128K | ﹤0.01% |
6,625
-8,157
| -55% | -$158K |
|
1048
Liberty Media Series C
FWONK
$25.5B
| $128K | ﹤0.01% |
2,091
+1,845
| +750% | +$113K |
|
1049
Quince Therapeutics
QNCX
$84.9M
| $128K | ﹤0.01% |
+58,017
| New | +$128K |
|
|
ROIC
1050
DELISTED
Retail Opportunity Investments Corp.
ROIC
| $128K | ﹤0.01% |
+8,155
| New | +$128K |
|