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 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$16.3M |
| 3 |
Walt Disney
DIS
|
+$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.4M |
| 5 |
Gilead Sciences
GILD
|
+$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$95.3M |
| 2 |
Apple
AAPL
|
+$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$20M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
651
LXP Industrial Trust
LXP
$2.67B
| $114K | 0.01% |
14,094
+4,111
| +41% | +$33.3K |
|
652
KKR & Co
KKR
$124B
| $113K | 0.01% |
6,758
-10,486
| -61% | -$175K |
|
653
Ford
F
$45.5B
| $112K | 0.01% |
8,274
-12,825
| -61% | -$174K |
|
|
TAL
654
DELISTED
TAL INTERNATIONAL GROUP, INC.
TAL
| $112K | 0.01% |
8,250
+3,720
| +82% | +$50.5K |
|
655
Carlisle Companies
CSL
$16.2B
| $111K | 0.01% |
+1,273
| New | +$111K |
|
656
iShares 3-7 Year Treasury Bond ETF
IEI
$16.9B
| $111K | 0.01% |
+895
| New | +$111K |
|
|
EGN
657
DELISTED
Energen
EGN
| $111K | 0.01% |
2,233
-267
| -11% | -$13.3K |
|
|
KYTH
658
DELISTED
KYTHERA BIOPHARMACEUTICALS, INC COM
KYTH
| $111K | 0.01% |
+1,485
| New | +$111K |
|
659
Pultegroup
PHM
$26.7B
| $110K | 0.01% |
+5,838
| New | +$110K |
|
660
U-Haul Holding Co
UHAL
$10.8B
| $110K | 0.01% |
+2,810
| New | +$110K |
|
661
Expedia Group
EXPE
$26.7B
| $109K | 0.01% |
927
-4,826
| -84% | -$567K |
|
662
Rio Tinto
RIO
$101B
| $109K | 0.01% |
3,227
-19,106
| -86% | -$645K |
|
|
TMX
663
DELISTED
Terminix Global Holdings, Inc.
TMX
| $108K | 0.01% |
4,819
+3,178
| +194% | +$71.2K |
|
|
BRS
664
DELISTED
Bristow Group, Inc.
BRS
| $108K | 0.01% |
4,130
+3,520
| +577% | +$92K |
|
|
PRXL
665
DELISTED
Parexel International Corp
PRXL
| $108K | 0.01% |
1,751
+932
| +114% | +$57.5K |
|
666
W.W. Grainger
GWW
$47.5B
| $107K | 0.01% |
498
-5,677
| -92% | -$1.22M |
|
667
ProShares Ultra Materials
UYM
$34.7M
| $107K | 0.01% |
+14,124
| New | +$107K |
|
|
BKS
668
DELISTED
Barnes & Noble
BKS
| $107K | 0.01% |
8,847
+2,861
| +48% | +$34.6K |
|
669
Sociedad Química y Minera de Chile
SQM
$12B
| $106K | 0.01% |
7,521
-12,069
| -62% | -$170K |
|
670
Teekay
TK
$721M
| $106K | 0.01% |
3,597
-1,270
| -26% | -$37.4K |
|
671
ProShares UltraPro Dow 30
UDOW
$714M
| $106K | 0.01% |
+8,072
| New | +$106K |
|
|
ARII
672
DELISTED
American Railcar Industries, Inc.
ARII
| $106K | 0.01% |
2,954
-2,453
| -45% | -$88K |
|
673
Kodak
KODK
$464M
| $105K | 0.01% |
6,776
+5,947
| +717% | +$92.2K |
|
674
Vale
VALE
$44.8B
| $105K | 0.01% |
+25,208
| New | +$105K |
|
675
Vanguard Consumer Staples ETF
VDC
$7.56B
| $105K | 0.01% |
871
-458
| -34% | -$55.2K |
|