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
|
+$35.2M |
| 2 |
Micron Technology
MU
|
+$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$29.5M |
| 4 |
NVIDIA
NVDA
|
+$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$33.4M |
| 3 |
Tesla
TSLA
|
+$19.8M |
| 4 |
Netflix
NFLX
|
+$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
+$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1376
iShares Latin America 40 ETF
ILF
$1.81B
| $33K | ﹤0.01% |
1,144
-10,519
| -90% | -$303K |
|
1377
Interpublic Group of Companies
IPG
$9.78B
| $33K | ﹤0.01% |
1,446
-2,575
| -64% | -$58.8K |
|
1378
KLA
KLAC
$127B
| $33K | ﹤0.01% |
+331
| New | +$33K |
|
1379
Lineage Cell Therapeutics
LCTX
$295M
| $33K | ﹤0.01% |
18,570
+7,748
| +72% | +$13.8K |
|
1380
Pinnacle West Capital
PNW
$10.6B
| $33K | ﹤0.01% |
+418
| New | +$33K |
|
1381
PROS Holdings
PRO
$745M
| $33K | ﹤0.01% |
+927
| New | +$33K |
|
1382
VanEck Retail ETF
RTH
$264M
| $33K | ﹤0.01% |
+334
| New | +$33K |
|
1383
Treehouse Foods
THS
$906M
| $33K | ﹤0.01% |
645
-947
| -59% | -$48.5K |
|
1384
Invesco DB US Dollar Index Bearish Fund
UDN
$147M
| $33K | ﹤0.01% |
1,537
-447
| -23% | -$9.6K |
|
|
SRC
1385
DELISTED
SPIRIT REALTY CAPITAL, INC.
SRC
| $33K | ﹤0.01% |
840
-1,095
| -57% | -$43K |
|
1386
Invesco DB Oil Fund
DBO
$227M
| $32K | ﹤0.01% |
2,571
+2,303
| +859% | +$28.7K |
|
|
ELME
1387
Elme Communities
ELME
$1.51B
| $32K | ﹤0.01% |
1,058
-1,208
| -53% | -$36.5K |
|
1388
Green Plains
GPRE
$641M
| $32K | ﹤0.01% |
1,798
-1,310
| -42% | -$23.3K |
|
1389
Pacific Biosciences
PACB
$378M
| $32K | ﹤0.01% |
+9,135
| New | +$32K |
|
1390
Perrigo
PRGO
$3.1B
| $32K | ﹤0.01% |
+449
| New | +$32K |
|
1391
VEON
VEON
$3.71B
| $32K | ﹤0.01% |
544
-304
| -36% | -$17.9K |
|
|
ACGN
1392
DELISTED
Aceragen, Inc. Common Stock
ACGN
| $32K | ﹤0.01% |
+182
| New | +$32K |
|
|
AKS
1393
DELISTED
AK Steel Holding Corp.
AKS
| $32K | ﹤0.01% |
7,418
-194
| -3% | -$837 |
|
|
SPHS
1394
DELISTED
Sophiris Bio, Inc.
SPHS
| $32K | ﹤0.01% |
11,693
+5,160
| +79% | +$14.1K |
|
1395
Century Communities
CCS
$2.06B
| $31K | ﹤0.01% |
997
-10,822
| -92% | -$336K |
|
1396
KraneShares CSI China Internet ETF
KWEB
$9.07B
| $31K | ﹤0.01% |
537
-23,669
| -98% | -$1.37M |
|
1397
Lennox International
LII
$19.9B
| $31K | ﹤0.01% |
+159
| New | +$31K |
|
1398
MiMedx Group
MDXG
$1.06B
| $31K | ﹤0.01% |
+5,000
| New | +$31K |
|
1399
Maximus
MMS
$5.08B
| $31K | ﹤0.01% |
+503
| New | +$31K |
|
1400
Semtech
SMTC
$5.29B
| $31K | ﹤0.01% |
+670
| New | +$31K |
|