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 | |
|---|---|---|---|---|---|---|
276
Peloton Interactive
PTON
$3.27B
| $1.42M | ﹤0.01% |
155,161
-16,120
| -9% | -$148K |
|
277
Dynavax Technologies
DVAX
$1.18B
| $1.42M | ﹤0.01% |
113,058
-48,573
| -30% | -$611K |
|
278
Plug Power
PLUG
$1.69B
| $1.4M | ﹤0.01% |
84,190
-415,415
| -83% | -$6.88M |
|
|
IAA
279
DELISTED
IAA, Inc. Common Stock
IAA
| $1.39M | ﹤0.01% |
42,361
+11,757
| +38% | +$385K |
|
280
Direxion Daily Semiconductor Bear 3X Shares
SOXS
$1.43B
| $1.39M | ﹤0.01% |
2,096
+1,014
| +94% | +$670K |
|
281
Infosys
INFY
$67.9B
| $1.38M | ﹤0.01% |
74,336
+66,626
| +864% | +$1.23M |
|
282
Neurocrine Biosciences
NBIX
$14.3B
| $1.37M | ﹤0.01% |
14,103
-9,456
| -40% | -$921K |
|
283
Manchester United
MANU
$2.71B
| $1.37M | ﹤0.01% |
123,472
+4,106
| +3% | +$45.7K |
|
284
SPDR S&P Retail ETF
XRT
$441M
| $1.37M | ﹤0.01% |
+23,530
| New | +$1.37M |
|
285
MPLX
MPLX
$51.5B
| $1.37M | ﹤0.01% |
46,848
+19,563
| +72% | +$570K |
|
286
ATI
ATI
$10.7B
| $1.36M | ﹤0.01% |
60,103
+16,936
| +39% | +$384K |
|
287
First Majestic Silver
AG
$4.47B
| $1.35M | ﹤0.01% |
188,594
+50,872
| +37% | +$365K |
|
288
Hershey
HSY
$37.6B
| $1.35M | ﹤0.01% |
6,287
+4,951
| +371% | +$1.06M |
|
289
iRhythm Technologies
IRTC
$5.82B
| $1.34M | ﹤0.01% |
+12,438
| New | +$1.34M |
|
290
Texas Roadhouse
TXRH
$11.2B
| $1.34M | ﹤0.01% |
+18,311
| New | +$1.34M |
|
|
TELL
291
DELISTED
Tellurian Inc.
TELL
| $1.34M | ﹤0.01% |
448,299
+11,049
| +3% | +$32.9K |
|
292
Constellation Brands
STZ
$26.2B
| $1.33M | ﹤0.01% |
+5,708
| New | +$1.33M |
|
293
America's Car Mart
CRMT
$299M
| $1.33M | ﹤0.01% |
+13,171
| New | +$1.33M |
|
294
ProShares UltraShort QQQ
QID
$273M
| $1.32M | ﹤0.01% |
10,108
-1,571
| -13% | -$205K |
|
295
Scorpio Tankers
STNG
$2.71B
| $1.32M | ﹤0.01% |
38,203
-109,220
| -74% | -$3.77M |
|
296
Post Holdings
POST
$5.88B
| $1.31M | ﹤0.01% |
+15,942
| New | +$1.31M |
|
297
American Water Works
AWK
$28B
| $1.31M | ﹤0.01% |
8,805
+4,625
| +111% | +$688K |
|
|
NEX
298
DELISTED
NexTier Oilfield Solutions Inc.
NEX
| $1.31M | ﹤0.01% |
137,505
+115,159
| +515% | +$1.09M |
|
299
Global X Uranium ETF
URA
$4.17B
| $1.3M | ﹤0.01% |
70,271
-58,304
| -45% | -$1.08M |
|
300
Crocs
CROX
$4.72B
| $1.3M | ﹤0.01% |
26,765
-9,039
| -25% | -$440K |
|