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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$84.4M |
| 3 |
NVIDIA
NVDA
|
$76.9M |
| 4 |
TSMC
TSM
|
$74.9M |
| 5 |
Amazon
AMZN
|
$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$73.7M |
| 3 |
Alibaba
BABA
|
$49M |
| 4 |
Advanced Micro Devices
AMD
|
$48.1M |
| 5 |
Uber
UBER
|
$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
251
CBRE Group
CBRE
$48.9B
| $1.69M | ﹤0.01% |
+12,891
| New | +$1.69M |
|
252
Golar LNG
GLNG
$4.52B
| $1.68M | ﹤0.01% |
44,322
-49,575
| -53% | -$1.88M |
|
253
Frontline
FRO
$4.93B
| $1.68M | ﹤0.01% |
112,934
-11,682
| -9% | -$173K |
|
254
Akero Therapeutics
AKRO
$3.58B
| $1.65M | ﹤0.01% |
40,853
+17,998
| +79% | +$728K |
|
255
Pitney Bowes
PBI
$2.11B
| $1.65M | ﹤0.01% |
+181,818
| New | +$1.65M |
|
256
Goodyear
GT
$2.43B
| $1.63M | ﹤0.01% |
176,675
-124,016
| -41% | -$1.15M |
|
257
Knight Transportation
KNX
$7B
| $1.62M | ﹤0.01% |
37,327
-9,703
| -21% | -$422K |
|
258
Groupon
GRPN
$971M
| $1.6M | ﹤0.01% |
84,988
-8,690
| -9% | -$163K |
|
259
BHP
BHP
$138B
| $1.58M | ﹤0.01% |
32,628
+1,491
| +5% | +$72.3K |
|
260
B2Gold
BTG
$5.52B
| $1.58M | ﹤0.01% |
555,671
+418,641
| +306% | +$1.19M |
|
261
Tapestry
TPR
$21.7B
| $1.58M | ﹤0.01% |
22,489
-44,939
| -67% | -$3.16M |
|
262
Patterson-UTI
PTEN
$2.18B
| $1.57M | ﹤0.01% |
191,387
-13,409
| -7% | -$110K |
|
263
Crane Co
CR
$10.6B
| $1.57M | ﹤0.01% |
10,223
+7,185
| +237% | +$1.1M |
|
|
MSTX
264
Tidal Trust II Defiance Daily Target 2x Long MSTR ETF
MSTX
$758M
| $1.55M | ﹤0.01% |
60,117
-637,229
| -91% | -$16.4M |
|
265
iShares 3-7 Year Treasury Bond ETF
IEI
$16.8B
| $1.53M | ﹤0.01% |
12,958
+1,487
| +13% | +$176K |
|
266
UGI
UGI
$7.43B
| $1.52M | ﹤0.01% |
46,042
+17,563
| +62% | +$581K |
|
267
Diageo
DEO
$61.3B
| $1.52M | ﹤0.01% |
14,478
+184
| +1% | +$19.3K |
|
268
iShares US Aerospace & Defense ETF
ITA
$9.3B
| $1.52M | ﹤0.01% |
9,903
-21,402
| -68% | -$3.28M |
|
269
Marqeta
MQ
$2.76B
| $1.51M | ﹤0.01% |
366,745
+305,613
| +500% | +$1.26M |
|
270
MarketAxess Holdings
MKTX
$7.01B
| $1.5M | ﹤0.01% |
6,943
+6,246
| +896% | +$1.35M |
|
271
DocuSign
DOCU
$16.1B
| $1.5M | ﹤0.01% |
+18,425
| New | +$1.5M |
|
272
Invesco KBW Bank ETF
KBWB
$4.87B
| $1.5M | ﹤0.01% |
23,837
+18,247
| +326% | +$1.15M |
|
|
MOMO
273
Hello Group
MOMO
$1.37B
| $1.49M | ﹤0.01% |
+236,558
| New | +$1.49M |
|
274
Permian Resources
PR
$9.75B
| $1.49M | ﹤0.01% |
+107,615
| New | +$1.49M |
|
275
Darling Ingredients
DAR
$5.07B
| $1.48M | ﹤0.01% |
47,270
-3,148
| -6% | -$98.3K |
|