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
|
$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$56.8M |
| 4 |
iShares Silver Trust
SLV
|
$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
$42.8M |
| 3 |
Verizon
VZ
|
$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.24% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
Vipshop
VIPS
$8.45B
| $1.63M | ﹤0.01% |
+181,567
| New | +$1.63M |
|
|
TBCH
352
Turtle Beach Corporation Common Stock
TBCH
$305M
| $1.62M | ﹤0.01% |
76,009
+67,089
| +752% | +$1.43M |
|
353
Krispy Kreme
DNUT
$579M
| $1.62M | ﹤0.01% |
+108,803
| New | +$1.62M |
|
354
Greenidge Generation Holdings
GREE
$18.5M
| $1.61M | ﹤0.01% |
18,667
+3,422
| +22% | +$294K |
|
355
Bread Financial
BFH
$3.09B
| $1.6M | ﹤0.01% |
28,468
-4,266
| -13% | -$239K |
|
356
MBIA
MBI
$377M
| $1.6M | ﹤0.01% |
103,798
-30,823
| -23% | -$474K |
|
357
iShares S&P 500 Growth ETF
IVW
$63.7B
| $1.59M | ﹤0.01% |
20,759
-6,078
| -23% | -$464K |
|
358
Skechers
SKX
$9.5B
| $1.58M | ﹤0.01% |
+38,856
| New | +$1.58M |
|
359
Jackson Financial
JXN
$6.65B
| $1.56M | ﹤0.01% |
+35,211
| New | +$1.56M |
|
360
Mondelez International
MDLZ
$79.9B
| $1.56M | ﹤0.01% |
+24,805
| New | +$1.56M |
|
361
Macy's
M
$4.64B
| $1.56M | ﹤0.01% |
63,869
-155,650
| -71% | -$3.79M |
|
362
TG Therapeutics
TGTX
$5.11B
| $1.55M | ﹤0.01% |
162,899
+49,301
| +43% | +$469K |
|
363
Spirit AeroSystems
SPR
$4.8B
| $1.55M | ﹤0.01% |
31,667
-100,668
| -76% | -$4.92M |
|
364
Lockheed Martin
LMT
$108B
| $1.54M | ﹤0.01% |
3,497
-25,662
| -88% | -$11.3M |
|
365
Regions Financial
RF
$24.1B
| $1.53M | ﹤0.01% |
68,883
+32,345
| +89% | +$720K |
|
|
ABB
366
DELISTED
ABB Ltd.
ABB
| $1.52M | ﹤0.01% |
+47,142
| New | +$1.52M |
|
|
CCXI
367
DELISTED
ChemoCentryx, Inc.
CCXI
| $1.52M | ﹤0.01% |
+60,695
| New | +$1.52M |
|
368
Costamare
CMRE
$1.45B
| $1.52M | ﹤0.01% |
89,200
+51,072
| +134% | +$870K |
|
369
East-West Bancorp
EWBC
$14.8B
| $1.51M | ﹤0.01% |
+19,068
| New | +$1.51M |
|
370
United Microelectronic
UMC
$17.1B
| $1.5M | ﹤0.01% |
164,903
-14,445
| -8% | -$132K |
|
371
BHP
BHP
$138B
| $1.49M | ﹤0.01% |
21,651
-96,214
| -82% | -$6.63M |
|
|
CS
372
DELISTED
Credit Suisse Group
CS
| $1.49M | ﹤0.01% |
189,898
+103,146
| +119% | +$809K |
|
373
iShares National Muni Bond ETF
MUB
$38.9B
| $1.49M | ﹤0.01% |
+13,561
| New | +$1.49M |
|
374
On Holding
ONON
$14.9B
| $1.49M | ﹤0.01% |
58,890
+30,692
| +109% | +$774K |
|
|
NNDM
375
Nano Dimension
NNDM
$293M
| $1.48M | ﹤0.01% |
416,580
-1,510
| -0.4% | -$5.38K |
|