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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
$23.3M |
| 3 |
Pinduoduo
PDD
|
$17.3M |
| 4 |
Pfizer
PFE
|
$16.8M |
| 5 |
American Airlines Group
AAL
|
$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$38.1M |
| 3 |
AutoZone
AZO
|
$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$25.3M |
| 5 |
Apple
AAPL
|
$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
276
RTX Corp
RTX
$209B
| $1.51M | ﹤0.01% |
19,597
+19,364
| +8,311% | +$1.5M |
|
277
Perion Network
PERI
$409M
| $1.5M | ﹤0.01% |
83,961
-5,190
| -6% | -$92.8K |
|
|
OZON
278
DELISTED
Ozon Holdings PLC American Depositary Shares, each ADS representing one ordinary share
OZON
| $1.5M | ﹤0.01% |
26,711
+20,371
| +321% | +$1.14M |
|
279
TEGNA Inc
TGNA
$3.39B
| $1.49M | ﹤0.01% |
79,381
+75,501
| +1,946% | +$1.42M |
|
280
ARK Autonomous Technology & Robotics ETF
ARKQ
$1.28B
| $1.49M | ﹤0.01% |
17,723
-9,255
| -34% | -$777K |
|
|
SGI
281
Somnigroup International Inc.
SGI
$18.3B
| $1.47M | ﹤0.01% |
40,284
+11,393
| +39% | +$416K |
|
282
Tower Semiconductor
TSEM
$7.04B
| $1.47M | ﹤0.01% |
52,469
+42,846
| +445% | +$1.2M |
|
283
Comcast
CMCSA
$125B
| $1.47M | ﹤0.01% |
27,165
-29,082
| -52% | -$1.57M |
|
284
United Rentals
URI
$61.6B
| $1.46M | ﹤0.01% |
4,444
-1,438
| -24% | -$473K |
|
|
NEWR
285
DELISTED
New Relic, Inc.
NEWR
| $1.46M | ﹤0.01% |
23,793
+5,315
| +29% | +$327K |
|
|
JO
286
DELISTED
iPath Series B Bloomberg Coffee Subindex Total ReturnSM ETN
JO
| $1.46M | ﹤0.01% |
40,781
+7,447
| +22% | +$267K |
|
287
AvalonBay Communities
AVB
$27.8B
| $1.45M | ﹤0.01% |
7,861
+5,595
| +247% | +$1.03M |
|
|
NVTA
288
DELISTED
Invitae Corporation
NVTA
| $1.45M | ﹤0.01% |
37,929
-42,477
| -53% | -$1.62M |
|
|
CTLT
289
DELISTED
CATALENT, INC.
CTLT
| $1.45M | ﹤0.01% |
+13,753
| New | +$1.45M |
|
290
Dollar General
DG
$24B
| $1.44M | ﹤0.01% |
7,130
-3,062
| -30% | -$620K |
|
291
Scorpio Tankers
STNG
$2.66B
| $1.44M | ﹤0.01% |
78,035
+42,726
| +121% | +$788K |
|
292
Edwards Lifesciences
EW
$47.6B
| $1.43M | ﹤0.01% |
17,127
-9,438
| -36% | -$789K |
|
293
ProShares UltraPro Russell2000
URTY
$385M
| $1.43M | ﹤0.01% |
+13,390
| New | +$1.43M |
|
294
iShares MSCI India ETF
INDA
$9.25B
| $1.42M | ﹤0.01% |
33,777
-73,944
| -69% | -$3.12M |
|
295
Bloom Energy
BE
$12.9B
| $1.41M | ﹤0.01% |
52,249
+46,714
| +844% | +$1.26M |
|
296
ProShares UltraPro Short 20+ Year Treasury
TTT
$23M
| $1.41M | ﹤0.01% |
30,815
+29,905
| +3,286% | +$1.37M |
|
|
QVCGA
297
QVC Group, Inc. Series A Common Stock
QVCGA
$73.8M
| $1.41M | ﹤0.01% |
2,394
+1,427
| +148% | +$839K |
|
298
Qfin Holdings, Inc. American Depositary Shares
QFIN
$3.82B
| $1.41M | ﹤0.01% |
54,024
+35,553
| +192% | +$925K |
|
299
Travelers Companies
TRV
$62.4B
| $1.41M | ﹤0.01% |
+9,343
| New | +$1.41M |
|
300
HDFC Bank
HDB
$180B
| $1.4M | ﹤0.01% |
+18,034
| New | +$1.4M |
|