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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Vale
VALE
$44.8B
| $274K | ﹤0.01% |
+23,830
| New | +$274K |
|
552
Westlake Chemical Partners
WLKP
$769M
| $274K | ﹤0.01% |
+11,826
| New | +$274K |
|
553
FibroGen
FGEN
$46.5M
| $273K | ﹤0.01% |
296
-471
| -61% | -$434K |
|
554
iShares National Muni Bond ETF
MUB
$39.3B
| $273K | ﹤0.01% |
2,399
-77
| -3% | -$8.76K |
|
555
Melco Resorts & Entertainment
MLCO
$3.8B
| $272K | ﹤0.01% |
14,043
-10,150
| -42% | -$197K |
|
556
Citizens Financial Group
CFG
$22.3B
| $269K | ﹤0.01% |
7,621
-6,726
| -47% | -$237K |
|
557
Owens Corning
OC
$12.8B
| $269K | ﹤0.01% |
4,269
-24,293
| -85% | -$1.53M |
|
558
Spectrum Brands
SPB
$1.3B
| $268K | ﹤0.01% |
5,087
+917
| +22% | +$48.3K |
|
|
VAR
559
DELISTED
Varian Medical Systems, Inc.
VAR
| $266K | ﹤0.01% |
+2,235
| New | +$266K |
|
560
iShares MSCI Europe Financials ETF
EUFN
$4.41B
| $265K | ﹤0.01% |
+15,096
| New | +$265K |
|
561
McCormick & Company Non-Voting
MKC
$18.4B
| $265K | ﹤0.01% |
3,402
-2,014
| -37% | -$157K |
|
562
USA Compression Partners
USAC
$2.84B
| $265K | ﹤0.01% |
+15,367
| New | +$265K |
|
563
QuinStreet
QNST
$912M
| $264K | ﹤0.01% |
+20,995
| New | +$264K |
|
|
SAFE
564
DELISTED
Safehold Inc.
SAFE
| $259K | ﹤0.01% |
8,519
+4,446
| +109% | +$135K |
|
565
Nomad Foods
NOMD
$2.12B
| $258K | ﹤0.01% |
+12,587
| New | +$258K |
|
566
Vicor
VICR
$2.25B
| $258K | ﹤0.01% |
+8,773
| New | +$258K |
|
|
DISCA
567
DELISTED
Discovery, Inc. Series A Common Stock
DISCA
| $257K | ﹤0.01% |
+9,657
| New | +$257K |
|
568
FTI Consulting
FCN
$5.23B
| $256K | ﹤0.01% |
+2,417
| New | +$256K |
|
|
LORL
569
DELISTED
Loral Space and Communications, Inc.
LORL
| $256K | ﹤0.01% |
6,193
+5,421
| +702% | +$224K |
|
570
JetBlue
JBLU
$1.85B
| $253K | ﹤0.01% |
15,164
-1,734
| -10% | -$28.9K |
|
571
Virtu Financial
VIRT
$3.27B
| $253K | ﹤0.01% |
+15,502
| New | +$253K |
|
572
Champion Homes, Inc.
SKY
$4.19B
| $252K | ﹤0.01% |
+8,401
| New | +$252K |
|
573
iShares Gold Trust
IAU
$53.5B
| $250K | ﹤0.01% |
8,868
-2,400
| -21% | -$67.7K |
|
574
Iovance Biotherapeutics
IOVA
$861M
| $250K | ﹤0.01% |
13,743
-5,492
| -29% | -$99.9K |
|
575
Royal Caribbean
RCL
$92.8B
| $249K | ﹤0.01% |
2,302
-40,010
| -95% | -$4.33M |
|