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 | |
|---|---|---|---|---|---|---|
376
Archer Daniels Midland
ADM
$29.5B
| $599K | ﹤0.01% |
+14,689
| New | +$599K |
|
377
Philip Morris
PM
$257B
| $597K | ﹤0.01% |
7,605
-44,381
| -85% | -$3.48M |
|
378
Innovative Industrial Properties
IIPR
$1.58B
| $595K | ﹤0.01% |
4,818
-4,252
| -47% | -$525K |
|
379
Pathward Financial
CASH
$1.74B
| $591K | ﹤0.01% |
+21,073
| New | +$591K |
|
380
CRH
CRH
$74.7B
| $589K | ﹤0.01% |
17,987
+8,782
| +95% | +$288K |
|
381
Expeditors International
EXPD
$16.5B
| $589K | ﹤0.01% |
+7,765
| New | +$589K |
|
382
Booking.com
BKNG
$177B
| $588K | ﹤0.01% |
314
+99
| +46% | +$185K |
|
383
Medical Properties Trust
MPW
$2.77B
| $588K | ﹤0.01% |
33,751
+24,416
| +262% | +$425K |
|
384
TAL Education Group
TAL
$6.37B
| $584K | ﹤0.01% |
15,337
+901
| +6% | +$34.3K |
|
385
Financial Select Sector SPDR Fund
XLF
$53.9B
| $581K | ﹤0.01% |
+21,057
| New | +$581K |
|
386
Franklin Resources
BEN
$12.6B
| $580K | ﹤0.01% |
+16,686
| New | +$580K |
|
387
Sprouts Farmers Market
SFM
$13.1B
| $570K | ﹤0.01% |
+30,175
| New | +$570K |
|
388
Gilead Sciences
GILD
$143B
| $569K | ﹤0.01% |
8,426
-29,291
| -78% | -$1.98M |
|
389
IPG Photonics
IPGP
$3.44B
| $567K | ﹤0.01% |
+3,676
| New | +$567K |
|
390
Yeti Holdings
YETI
$2.88B
| $567K | ﹤0.01% |
19,619
+15,293
| +354% | +$442K |
|
|
GSKY
391
DELISTED
GreenSky, Inc. Class A Common Stock
GSKY
| $561K | ﹤0.01% |
+45,678
| New | +$561K |
|
392
NGL Energy Partners
NGL
$748M
| $549K | ﹤0.01% |
37,202
+27,238
| +273% | +$402K |
|
393
Ascendis Pharma
ASND
$12B
| $545K | ﹤0.01% |
+4,733
| New | +$545K |
|
394
NatWest
NWG
$57.6B
| $545K | ﹤0.01% |
89,236
+84,254
| +1,691% | +$515K |
|
395
Sangamo Therapeutics
SGMO
$160M
| $545K | ﹤0.01% |
50,659
+41,209
| +436% | +$443K |
|
396
H&R Block
HRB
$6.73B
| $542K | ﹤0.01% |
+18,499
| New | +$542K |
|
397
AvalonBay Communities
AVB
$27.4B
| $536K | ﹤0.01% |
2,642
+1,922
| +267% | +$390K |
|
398
Xtrackers Harvest CSI 500 China A-Shares Small Cap ETF
ASHS
$28M
| $534K | ﹤0.01% |
20,393
-6,599
| -24% | -$173K |
|
399
British American Tobacco
BTI
$123B
| $534K | ﹤0.01% |
+15,329
| New | +$534K |
|
|
HRC
400
DELISTED
HILL-ROM HOLDINGS, INC.
HRC
| $534K | ﹤0.01% |
5,112
+4,893
| +2,234% | +$511K |
|