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
|
+$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$38.8M |
| 4 |
Amazon
AMZN
|
+$38.6M |
| 5 |
Tesla
TSLA
|
+$36M |
Top Sells
| 1 |
Alibaba
BABA
|
+$46.4M |
| 2 |
Boeing
BA
|
+$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
NVIDIA
NVDA
|
+$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
926
TopBuild
BLD
$11.8B
| $122K | ﹤0.01% |
1,191
-327
| -22% | -$33.5K |
|
927
Direxion Daily CSI 300 China A Share Bull 2X Shares
CHAU
$157M
| $122K | ﹤0.01% |
5,006
-17,513
| -78% | -$427K |
|
928
GoDaddy
GDDY
$20.1B
| $122K | ﹤0.01% |
+1,806
| New | +$122K |
|
929
RadNet
RDNT
$5.49B
| $122K | ﹤0.01% |
+6,047
| New | +$122K |
|
930
Arbutus Biopharma
ABUS
$886M
| $120K | ﹤0.01% |
43,344
+42,925
| +10,245% | +$119K |
|
931
Bloomin' Brands
BLMN
$586M
| $120K | ﹤0.01% |
5,457
-1,960
| -26% | -$43.1K |
|
932
Costamare
CMRE
$1.46B
| $120K | ﹤0.01% |
12,610
+10,784
| +591% | +$103K |
|
933
Devon Energy
DVN
$22.5B
| $119K | ﹤0.01% |
4,600
-10,677
| -70% | -$276K |
|
934
LoveSac
LOVE
$302M
| $119K | ﹤0.01% |
7,467
+4,440
| +147% | +$70.8K |
|
935
Plug Power
PLUG
$1.66B
| $119K | ﹤0.01% |
+37,865
| New | +$119K |
|
936
Zions Bancorporation
ZION
$8.56B
| $119K | ﹤0.01% |
2,301
+1,559
| +210% | +$80.6K |
|
937
Zai Lab
ZLAB
$3.16B
| $119K | ﹤0.01% |
2,867
+2,739
| +2,140% | +$114K |
|
|
SILV
938
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $119K | ﹤0.01% |
+17,794
| New | +$119K |
|
939
Arch Capital
ACGL
$33.8B
| $118K | ﹤0.01% |
+2,756
| New | +$118K |
|
940
Axos Financial
AX
$5.19B
| $118K | ﹤0.01% |
+3,928
| New | +$118K |
|
941
CorMedix
CRMD
$955M
| $118K | ﹤0.01% |
+16,318
| New | +$118K |
|
942
LiveRamp
RAMP
$1.74B
| $118K | ﹤0.01% |
+2,465
| New | +$118K |
|
943
ScottsMiracle-Gro
SMG
$3.5B
| $118K | ﹤0.01% |
+1,120
| New | +$118K |
|
|
CDK
944
DELISTED
CDK Global, Inc.
CDK
| $118K | ﹤0.01% |
+2,174
| New | +$118K |
|
945
ANI Pharmaceuticals
ANIP
$2.11B
| $117K | ﹤0.01% |
1,904
-10,211
| -84% | -$627K |
|
946
KLX Energy Services
KLXE
$34.1M
| $117K | ﹤0.01% |
+3,657
| New | +$117K |
|
947
NeoGenomics
NEO
$966M
| $117K | ﹤0.01% |
4,027
-7,487
| -65% | -$218K |
|
948
Oppenheimer Holdings
OPY
$763M
| $117K | ﹤0.01% |
4,293
-7,755
| -64% | -$211K |
|
949
Boston Beer
SAM
$2.39B
| $117K | ﹤0.01% |
+312
| New | +$117K |
|
950
Urban Outfitters
URBN
$6.33B
| $117K | ﹤0.01% |
+4,226
| New | +$117K |
|