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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
676
Century Communities
CCS
$2.04B
| $321K | ﹤0.01% |
7,595
+6,098
| +407% | +$258K |
|
677
B&G Foods
BGS
$363M
| $318K | ﹤0.01% |
11,454
+11,119
| +3,319% | +$309K |
|
678
Dine Brands
DIN
$370M
| $316K | ﹤0.01% |
+5,789
| New | +$316K |
|
679
Banco Santander
SAN
$149B
| $316K | ﹤0.01% |
178,343
+19,932
| +13% | +$35.3K |
|
|
ABB
680
DELISTED
ABB Ltd.
ABB
| $316K | ﹤0.01% |
+12,442
| New | +$316K |
|
|
AZPN
681
DELISTED
ASPEN TECHNOLOGY INC
AZPN
| $316K | ﹤0.01% |
2,497
-5,508
| -69% | -$697K |
|
682
Ryman Hospitality Properties
RHP
$6.38B
| $315K | ﹤0.01% |
8,575
-29,874
| -78% | -$1.1M |
|
683
Gerdau
GGB
$6.27B
| $314K | ﹤0.01% |
106,990
+98,360
| +1,140% | +$289K |
|
684
Magnite
MGNI
$3.38B
| $314K | ﹤0.01% |
+45,305
| New | +$314K |
|
|
MRO
685
DELISTED
Marathon Oil Corporation
MRO
| $313K | ﹤0.01% |
76,628
+38,796
| +103% | +$158K |
|
|
PE
686
DELISTED
PARSLEY ENERGY INC
PE
| $312K | ﹤0.01% |
33,344
-16,139
| -33% | -$151K |
|
687
United States Brent Oil Fund
BNO
$102M
| $311K | ﹤0.01% |
+29,251
| New | +$311K |
|
|
AGEN
688
Agenus
AGEN
$148M
| $310K | ﹤0.01% |
3,957
+3,374
| +579% | +$264K |
|
689
The RealReal
REAL
$1.08B
| $310K | ﹤0.01% |
21,485
-10,016
| -32% | -$145K |
|
|
EXK
690
Endeavour Silver
EXK
$1.77B
| $309K | ﹤0.01% |
88,148
+71,648
| +434% | +$251K |
|
691
Kinder Morgan
KMI
$61.1B
| $309K | ﹤0.01% |
25,083
-44,552
| -64% | -$549K |
|
692
Stride
LRN
$7B
| $309K | ﹤0.01% |
11,733
-19,546
| -62% | -$515K |
|
693
Autohome
ATHM
$3.48B
| $307K | ﹤0.01% |
3,202
+1,994
| +165% | +$191K |
|
694
Fiverr
FVRR
$872M
| $306K | ﹤0.01% |
2,203
-1,087
| -33% | -$151K |
|
695
Sandstorm Gold
SAND
$3.43B
| $306K | ﹤0.01% |
+36,309
| New | +$306K |
|
696
Truist Financial
TFC
$58.5B
| $306K | ﹤0.01% |
+8,062
| New | +$306K |
|
697
Invesco CurrencyShares Australian Dollar Trust
FXA
$79.1M
| $304K | ﹤0.01% |
4,263
-28,934
| -87% | -$2.06M |
|
698
Brookfield Infrastructure Partners
BIP
$14.4B
| $302K | ﹤0.01% |
+9,530
| New | +$302K |
|
699
iShares Core MSCI EAFE ETF
IEFA
$153B
| $300K | ﹤0.01% |
4,991
+2,598
| +109% | +$156K |
|
700
Openlane
KAR
$3.17B
| $300K | ﹤0.01% |
+20,896
| New | +$300K |
|