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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
851
iShares MSCI Spain ETF
EWP
$1.39B
| $123K | 0.01% |
4,045
-3,158
| -44% | -$96K |
|
|
VIVO
852
DELISTED
Meridian Bioscience Inc
VIVO
| $123K | 0.01% |
8,982
+4,578
| +104% | +$62.7K |
|
853
TEGNA Inc
TGNA
$3.37B
| $122K | 0.01% |
7,488
-1,573
| -17% | -$25.6K |
|
854
United Parks & Resorts
PRKS
$2.8B
| $122K | 0.01% |
6,690
+2,988
| +81% | +$54.5K |
|
855
iShares MSCI Canada ETF
EWC
$3.28B
| $121K | 0.01% |
4,506
-1,928
| -30% | -$51.8K |
|
|
MOMO
856
Hello Group
MOMO
$1.23B
| $121K | 0.01% |
3,575
-46,452
| -93% | -$1.57M |
|
857
Cal-Maine
CALM
$5B
| $120K | 0.01% |
3,265
-8,034
| -71% | -$295K |
|
858
TAL Education Group
TAL
$6.91B
| $120K | 0.01% |
6,780
-49,506
| -88% | -$876K |
|
|
ARNA
859
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $120K | 0.01% |
8,270
+7,208
| +679% | +$105K |
|
|
CNXM
860
DELISTED
CNX Midstream Partners LP
CNXM
| $120K | 0.01% |
+5,114
| New | +$120K |
|
861
Kopin
KOPN
$394M
| $119K | 0.01% |
29,139
+27,695
| +1,918% | +$113K |
|
862
Natural Resource Partners
NRP
$1.34B
| $118K | 0.01% |
3,283
-31,338
| -91% | -$1.13M |
|
863
Pearson
PSO
$9.06B
| $118K | 0.01% |
13,928
+13,770
| +8,715% | +$117K |
|
864
Winnebago Industries
WGO
$925M
| $118K | 0.01% |
+4,042
| New | +$118K |
|
|
BRG
865
DELISTED
Bluerock Residential Growth REIT, Inc.
BRG
| $118K | 0.01% |
9,586
+9,447
| +6,796% | +$116K |
|
|
DF
866
DELISTED
Dean Foods Company
DF
| $118K | 0.01% |
+6,033
| New | +$118K |
|
|
FIG
867
DELISTED
Fortress Investment Group Llc
FIG
| $118K | 0.01% |
14,933
-39,792
| -73% | -$314K |
|
|
BRSL
868
Brightstar Lottery PLC
BRSL
$3.14B
| $117K | 0.01% |
+4,971
| New | +$117K |
|
869
Smith & Wesson
SWBI
$418M
| $117K | 0.01% |
7,733
-6,598
| -46% | -$99.8K |
|
870
Griffon
GFF
$3.59B
| $116K | 0.01% |
4,707
-4,048
| -46% | -$99.8K |
|
871
Citi Trends
CTRN
$273M
| $115K | 0.01% |
+6,810
| New | +$115K |
|
872
RCI Hospitality Holdings
RICK
$251M
| $115K | 0.01% |
6,666
-5,387
| -45% | -$92.9K |
|
873
Bunge Global
BG
$16.1B
| $114K | ﹤0.01% |
1,440
-3,331
| -70% | -$264K |
|
874
BRF SA
BRFS
$6.67B
| $114K | ﹤0.01% |
9,339
-5,017
| -35% | -$61.2K |
|
875
ODP
ODP
$645M
| $114K | ﹤0.01% |
+2,444
| New | +$114K |
|