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
|
+$45.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$33.2M |
| 5 |
Citigroup
C
|
+$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
+$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$111M |
| 3 |
NVIDIA
NVDA
|
+$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
+$60.9M |
| 5 |
Procter & Gamble
PG
|
+$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
451
UMB Financial
UMBF
$9.54B
| $626K | ﹤0.01% |
+10,862
| New | +$626K |
|
|
MAG
452
DELISTED
MAG Silver
MAG
| $616K | ﹤0.01% |
48,694
+28,939
| +146% | +$366K |
|
453
Masimo
MASI
$8.08B
| $615K | ﹤0.01% |
3,335
+2,504
| +301% | +$462K |
|
454
Sprouts Farmers Market
SFM
$13.6B
| $614K | ﹤0.01% |
17,530
+4,821
| +38% | +$169K |
|
|
TCN
455
DELISTED
Tricon Residential Inc.
TCN
| $613K | ﹤0.01% |
+79,171
| New | +$613K |
|
456
Acadia Realty Trust
AKR
$2.63B
| $613K | ﹤0.01% |
43,964
-22,434
| -34% | -$313K |
|
457
Haleon
HLN
$43.6B
| $610K | ﹤0.01% |
75,007
-169,707
| -69% | -$1.38M |
|
458
FibroGen
FGEN
$45.1M
| $608K | ﹤0.01% |
1,304
+1,282
| +5,827% | +$598K |
|
459
PBF Energy
PBF
$3.29B
| $608K | ﹤0.01% |
+14,044
| New | +$608K |
|
460
Coeur Mining
CDE
$9.36B
| $607K | ﹤0.01% |
152,245
+1,895
| +1% | +$7.56K |
|
461
Par Pacific Holdings
PARR
$1.7B
| $605K | ﹤0.01% |
+20,751
| New | +$605K |
|
|
BCLI
462
DELISTED
BRAINSTORM CELL THERAPUTC
BCLI
| $605K | ﹤0.01% |
12,226
+11,489
| +1,559% | +$569K |
|
463
Grab
GRAB
$21.2B
| $605K | ﹤0.01% |
+201,007
| New | +$605K |
|
464
B2Gold
BTG
$5.68B
| $601K | ﹤0.01% |
152,592
+22,723
| +17% | +$89.5K |
|
465
FLEX LNG
FLNG
$1.4B
| $600K | ﹤0.01% |
17,880
-16,250
| -48% | -$545K |
|
|
LDTC
466
DELISTED
LeddarTech
LDTC
| $600K | ﹤0.01% |
121,010
+121,008
| +6,050,400% | +$600K |
|
|
PBT
467
Permian Basin Royalty Trust
PBT
$838M
| $597K | ﹤0.01% |
24,474
-39,000
| -61% | -$951K |
|
468
STAAR Surgical
STAA
$1.37B
| $595K | ﹤0.01% |
+9,312
| New | +$595K |
|
469
Alcon
ALC
$39.5B
| $593K | ﹤0.01% |
+8,419
| New | +$593K |
|
470
Generac Holdings
GNRC
$10.8B
| $592K | ﹤0.01% |
5,483
-32,950
| -86% | -$3.56M |
|
471
SPDR S&P Bank ETF
KBE
$1.62B
| $583K | ﹤0.01% |
+15,731
| New | +$583K |
|
472
Gores Guggenheim
PSNY
$2.18B
| $583K | ﹤0.01% |
154,037
+97,172
| +171% | +$368K |
|
473
Airbnb
ABNB
$76.3B
| $582K | ﹤0.01% |
4,683
-115,945
| -96% | -$14.4M |
|
474
Box
BOX
$4.8B
| $580K | ﹤0.01% |
21,658
-11,767
| -35% | -$315K |
|
475
VanEck High Yield Muni ETF
HYD
$3.35B
| $578K | ﹤0.01% |
11,190
-3,230
| -22% | -$167K |
|