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 | |
|---|---|---|---|---|---|---|
451
Axalta
AXTA
$6.56B
| $1.02M | ﹤0.01% |
29,531
-147,561
| -83% | -$5.07M |
|
|
CGC
452
Canopy Growth
CGC
$427M
| $1.01M | ﹤0.01% |
117,294
+115,495
| +6,420% | +$996K |
|
453
Celldex Therapeutics
CLDX
$1.63B
| $1.01M | ﹤0.01% |
+24,101
| New | +$1.01M |
|
454
Target
TGT
$40B
| $1.01M | ﹤0.01% |
+5,690
| New | +$1.01M |
|
|
HES
455
DELISTED
Hess
HES
| $1M | ﹤0.01% |
+6,584
| New | +$1M |
|
456
CubeSmart
CUBE
$9.17B
| $1M | ﹤0.01% |
+22,197
| New | +$1M |
|
457
LivaNova
LIVN
$3B
| $999K | ﹤0.01% |
17,868
+17,780
| +20,205% | +$994K |
|
458
Comstock Resources
CRK
$4.95B
| $995K | ﹤0.01% |
107,261
+26,592
| +33% | +$247K |
|
459
Direxion Daily Semiconductor Bear 3X Shares
SOXS
$1.14B
| $994K | ﹤0.01% |
30,992
+26,980
| +672% | +$865K |
|
460
PPG Industries
PPG
$24.7B
| $993K | ﹤0.01% |
6,856
-15,244
| -69% | -$2.21M |
|
461
GigaCloud Technology
GCT
$1.11B
| $992K | ﹤0.01% |
37,140
+10,473
| +39% | +$280K |
|
462
AES
AES
$9.29B
| $991K | ﹤0.01% |
+55,291
| New | +$991K |
|
463
PagerDuty
PD
$1.52B
| $985K | ﹤0.01% |
43,442
+15,992
| +58% | +$363K |
|
464
Structure Therapeutics
GPCR
$1.36B
| $984K | ﹤0.01% |
22,965
+10,643
| +86% | +$456K |
|
465
Eastman Chemical
EMN
$7.48B
| $975K | ﹤0.01% |
9,730
-722
| -7% | -$72.3K |
|
466
Ciena
CIEN
$19.6B
| $972K | ﹤0.01% |
+19,660
| New | +$972K |
|
467
iShares Russell 1000 Growth ETF
IWF
$123B
| $966K | ﹤0.01% |
2,868
-10,335
| -78% | -$3.48M |
|
468
RingCentral
RNG
$2.83B
| $966K | ﹤0.01% |
27,835
+24,863
| +837% | +$863K |
|
469
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$297M
| $964K | ﹤0.01% |
29,273
-260,588
| -90% | -$8.58M |
|
470
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$188M
| $964K | ﹤0.01% |
28,789
+19,535
| +211% | +$654K |
|
471
Mid-America Apartment Communities
MAA
$16.5B
| $959K | ﹤0.01% |
7,294
-79
| -1% | -$10.4K |
|
472
Waste Management
WM
$87.2B
| $956K | ﹤0.01% |
4,488
-7,360
| -62% | -$1.57M |
|
473
Telephone and Data Systems
TDS
$4.37B
| $954K | ﹤0.01% |
59,580
-16,211
| -21% | -$260K |
|
474
Sweetgreen
SG
$1.02B
| $949K | ﹤0.01% |
37,588
+35,500
| +1,700% | +$896K |
|
475
DuPont de Nemours
DD
$32.7B
| $947K | ﹤0.01% |
+12,353
| New | +$947K |
|