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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
CF Industries
CF
$13.6B
| $344K | 0.01% |
+11,731
| New | +$344K |
|
552
Enpro
NPO
$4.75B
| $344K | 0.01% |
+4,845
| New | +$344K |
|
|
OMED
553
DELISTED
OncoMed Pharmaceuticals, Inc.
OMED
| $344K | 0.01% |
37,436
+20,151
| +117% | +$185K |
|
554
Axcelis
ACLS
$3.04B
| $340K | 0.01% |
18,094
+12,791
| +241% | +$240K |
|
555
Invesco DB Agriculture Fund
DBA
$802M
| $340K | 0.01% |
17,222
+16,916
| +5,528% | +$334K |
|
556
L3Harris
LHX
$52.9B
| $339K | 0.01% |
+3,055
| New | +$339K |
|
557
iShares Preferred and Income Securities ETF
PFF
$14.8B
| $338K | 0.01% |
+8,756
| New | +$338K |
|
|
HDS
558
DELISTED
HD Supply Holdings, Inc.
HDS
| $334K | 0.01% |
8,133
-10,605
| -57% | -$436K |
|
559
Jabil
JBL
$24B
| $333K | 0.01% |
+11,531
| New | +$333K |
|
|
STON
560
DELISTED
StoneMor Inc.
STON
| $333K | 0.01% |
42,008
+8,951
| +27% | +$71K |
|
561
Diageo
DEO
$54.6B
| $332K | 0.01% |
+2,877
| New | +$332K |
|
562
Tronox
TROX
$802M
| $331K | 0.01% |
17,981
+14,392
| +401% | +$265K |
|
563
Xerox
XRX
$502M
| $331K | 0.01% |
11,303
+6,919
| +158% | +$203K |
|
564
Invesco CurrencyShares Japanese Yen Trust
FXY
$560M
| $330K | 0.01% |
3,817
-3,308
| -46% | -$286K |
|
|
DFS
565
DELISTED
Discover Financial Services
DFS
| $329K | 0.01% |
+4,821
| New | +$329K |
|
|
GPOR
566
DELISTED
Gulfport Energy Corp.
GPOR
| $329K | 0.01% |
19,197
-36,736
| -66% | -$630K |
|
567
Grand Canyon Education
LOPE
$5.88B
| $328K | 0.01% |
4,586
+2,700
| +143% | +$193K |
|
|
WRI
568
DELISTED
Weingarten Realty Investors
WRI
| $326K | 0.01% |
+9,767
| New | +$326K |
|
569
Graphic Packaging
GPK
$5.91B
| $324K | 0.01% |
25,245
+23,923
| +1,810% | +$307K |
|
570
Live Nation Entertainment
LYV
$38.2B
| $324K | 0.01% |
10,692
-11,638
| -52% | -$353K |
|
571
Azenta
AZTA
$1.42B
| $323K | 0.01% |
+14,462
| New | +$323K |
|
572
Hormel Foods
HRL
$13.7B
| $323K | 0.01% |
9,329
+7,264
| +352% | +$252K |
|
573
Toronto Dominion Bank
TD
$134B
| $322K | 0.01% |
+6,439
| New | +$322K |
|
|
MBT
574
DELISTED
Mobile TeleSystems Public Joint Stock Company American Depositary Shares (Each representing 2 Shares
MBT
| $322K | 0.01% |
+29,233
| New | +$322K |
|
575
NETGEAR
NTGR
$851M
| $321K | 0.01% |
+6,495
| New | +$321K |
|