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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
iShares MSCI Japan ETF
EWJ
$15.8B
| $1.48M | ﹤0.01% |
+20,736
| New | +$1.48M |
|
|
BRSL
352
Brightstar Lottery PLC
BRSL
$3.14B
| $1.48M | ﹤0.01% |
65,500
+45,726
| +231% | +$1.03M |
|
353
PG&E
PCG
$32.8B
| $1.48M | ﹤0.01% |
88,288
-163,285
| -65% | -$2.74M |
|
354
ResMed
RMD
$40B
| $1.47M | ﹤0.01% |
+7,430
| New | +$1.47M |
|
355
Corteva
CTVA
$48.1B
| $1.47M | ﹤0.01% |
25,441
-24,133
| -49% | -$1.39M |
|
356
Mohawk Industries
MHK
$8.12B
| $1.46M | ﹤0.01% |
+11,125
| New | +$1.46M |
|
357
Evolv Technologies
EVLV
$1.38B
| $1.45M | ﹤0.01% |
+326,925
| New | +$1.45M |
|
358
Spotify
SPOT
$151B
| $1.45M | ﹤0.01% |
5,497
-48,055
| -90% | -$12.7M |
|
359
Asana
ASAN
$3.35B
| $1.44M | ﹤0.01% |
93,227
-6,562
| -7% | -$102K |
|
360
ICL Group
ICL
$7.92B
| $1.44M | ﹤0.01% |
267,992
+267,928
| +418,638% | +$1.44M |
|
361
Sportradar
SRAD
$8.92B
| $1.44M | ﹤0.01% |
123,641
+70,273
| +132% | +$818K |
|
362
Liberty Global Class A
LBTYA
$4.01B
| $1.44M | ﹤0.01% |
84,854
-346
| -0.4% | -$5.85K |
|
363
ProShares Ultra Silver
AGQ
$870M
| $1.43M | ﹤0.01% |
49,896
+27,352
| +121% | +$786K |
|
364
Vanguard Real Estate ETF
VNQ
$34.3B
| $1.43M | ﹤0.01% |
+16,522
| New | +$1.43M |
|
365
Invesco CurrencyShares Swiss Franc Trust
FXF
$378M
| $1.42M | ﹤0.01% |
+14,350
| New | +$1.42M |
|
366
Radian Group
RDN
$5.04B
| $1.41M | ﹤0.01% |
+42,245
| New | +$1.41M |
|
367
Dyne Therapeutics
DYN
$1.87B
| $1.41M | ﹤0.01% |
49,706
+31,645
| +175% | +$898K |
|
368
Guardant Health
GH
$7.38B
| $1.4M | ﹤0.01% |
67,947
+42,756
| +170% | +$882K |
|
369
RenaissanceRe
RNR
$11.4B
| $1.4M | ﹤0.01% |
5,955
+2,126
| +56% | +$499K |
|
|
JNPR
370
DELISTED
Juniper Networks
JNPR
| $1.39M | ﹤0.01% |
+37,611
| New | +$1.39M |
|
371
Casey's General Stores
CASY
$20.3B
| $1.39M | ﹤0.01% |
4,373
+3,345
| +325% | +$1.06M |
|
372
argenx
ARGX
$45.1B
| $1.39M | ﹤0.01% |
3,520
-926
| -21% | -$364K |
|
373
Establishment Labs
ESTA
$1.14B
| $1.36M | ﹤0.01% |
+26,771
| New | +$1.36M |
|
374
Astria Therapeutics
ATXS
$398M
| $1.36M | ﹤0.01% |
96,681
+81,001
| +517% | +$1.14M |
|
375
Zimmer Biomet
ZBH
$19.8B
| $1.36M | ﹤0.01% |
+10,290
| New | +$1.36M |
|