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 |
NVIDIA
NVDA
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1276
iShares MSCI BIC ETF
BKF
$93.9M
| $21K | ﹤0.01% |
+500
| New | +$21K |
|
1277
Central Garden & Pet
CENT
$2.24B
| $21K | ﹤0.01% |
1,010
-3,181
| -76% | -$66.1K |
|
1278
DNOW Inc
DNOW
$1.6B
| $21K | ﹤0.01% |
+1,445
| New | +$21K |
|
1279
Ezcorp Inc
EZPW
$1.04B
| $21K | ﹤0.01% |
2,239
-19,544
| -90% | -$183K |
|
1280
GeoPark
GPRK
$325M
| $21K | ﹤0.01% |
1,191
-875
| -42% | -$15.4K |
|
|
NXRT
1281
NexPoint Residential Trust
NXRT
$858M
| $21K | ﹤0.01% |
+519
| New | +$21K |
|
|
PACW
1282
DELISTED
PacWest Bancorp
PACW
| $21K | ﹤0.01% |
560
+304
| +119% | +$11.4K |
|
|
ACC
1283
DELISTED
American Campus Communities, Inc.
ACC
| $21K | ﹤0.01% |
462
+117
| +34% | +$5.32K |
|
|
VRTU
1284
DELISTED
Virtusa Corporation
VRTU
| $21K | ﹤0.01% |
+475
| New | +$21K |
|
|
SRCI
1285
DELISTED
SRC Energy Inc
SRCI
| $21K | ﹤0.01% |
4,379
+3,646
| +497% | +$17.5K |
|
|
EMKR
1286
DELISTED
Emcore Corp
EMKR
| $21K | ﹤0.01% |
648
+87
| +16% | +$2.82K |
|
1287
EXL Service
EXLS
$7.04B
| $20K | ﹤0.01% |
1,580
-1,405
| -47% | -$17.8K |
|
|
HIMX
1288
Himax Technologies
HIMX
$1.44B
| $20K | ﹤0.01% |
5,926
+5,774
| +3,799% | +$19.5K |
|
|
OSG
1289
DELISTED
Overseas Shipholding Group Inc.
OSG
| $20K | ﹤0.01% |
+11,007
| New | +$20K |
|
|
LN
1290
DELISTED
LINE Corporation
LN
| $20K | ﹤0.01% |
731
-4,532
| -86% | -$124K |
|
|
TOWR
1291
DELISTED
Tower International, Inc.
TOWR
| $20K | ﹤0.01% |
1,051
+492
| +88% | +$9.36K |
|
1292
Crane NXT
CXT
$3.46B
| $19K | ﹤0.01% |
+679
| New | +$19K |
|
1293
iShares Core Dividend Growth ETF
DGRO
$34.2B
| $19K | ﹤0.01% |
501
+129
| +35% | +$4.89K |
|
1294
8x8 Inc
EGHT
$286M
| $19K | ﹤0.01% |
806
-15,736
| -95% | -$371K |
|
1295
Highwoods Properties
HIW
$3.5B
| $19K | ﹤0.01% |
483
+369
| +324% | +$14.5K |
|
1296
Hercules Capital
HTGC
$3.53B
| $19K | ﹤0.01% |
+1,519
| New | +$19K |
|
|
SAFE
1297
Safehold
SAFE
$1.18B
| $19K | ﹤0.01% |
326
-789
| -71% | -$46K |
|
1298
Amplify Junior Silver Miners ETF
SILJ
$2.28B
| $19K | ﹤0.01% |
2,226
+1,727
| +346% | +$14.7K |
|
1299
SunCoke Energy
SXC
$654M
| $19K | ﹤0.01% |
2,171
+899
| +71% | +$7.87K |
|
1300
Tenable Holdings
TENB
$3.62B
| $19K | ﹤0.01% |
+677
| New | +$19K |
|