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
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
801
Fusion Fuel Green
HTOO
$7.55M
| $195K | ﹤0.01% |
1,261
+466
| +59% | +$72.1K |
|
802
Waste Connections
WCN
$45.8B
| $195K | ﹤0.01% |
+1,474
| New | +$195K |
|
|
FSP
803
Franklin Street Properties
FSP
$175M
| $194K | ﹤0.01% |
71,261
+48,717
| +216% | +$133K |
|
|
IGMS
804
DELISTED
IGM Biosciences
IGMS
| $193K | ﹤0.01% |
11,383
-20,385
| -64% | -$346K |
|
805
Zillow
Z
$21.6B
| $193K | ﹤0.01% |
5,999
-195,604
| -97% | -$6.29M |
|
|
DSKE
806
DELISTED
Daseke, Inc. Common Stock
DSKE
| $193K | ﹤0.01% |
34,092
-37,444
| -52% | -$212K |
|
807
Invesco India ETF
PIN
$213M
| $192K | ﹤0.01% |
9,037
+8,908
| +6,905% | +$189K |
|
808
scPharmaceuticals
SCPH
$302M
| $192K | ﹤0.01% |
26,849
+5,630
| +27% | +$40.3K |
|
|
MYOV
809
DELISTED
Myovant Sciences Ltd.
MYOV
| $191K | ﹤0.01% |
7,089
-7,022
| -50% | -$189K |
|
810
ARK Innovation ETF
ARKK
$7.38B
| $190K | ﹤0.01% |
6,112
+3,700
| +153% | +$115K |
|
811
Vanguard S&P Small-Cap 600 ETF
VIOO
$3.08B
| $190K | ﹤0.01% |
2,198
+1,338
| +156% | +$116K |
|
812
Direxion Daily S&P Biotech Bull 3X Shares
LABU
$730M
| $189K | ﹤0.01% |
1,341
-52,945
| -98% | -$7.46M |
|
|
ABB
813
DELISTED
ABB Ltd.
ABB
| $188K | ﹤0.01% |
+6,175
| New | +$188K |
|
814
IonQ
IONQ
$14B
| $186K | ﹤0.01% |
54,185
+17,450
| +48% | +$59.9K |
|
|
MTLS
815
Materialise
MTLS
$307M
| $186K | ﹤0.01% |
21,172
+19,650
| +1,291% | +$173K |
|
816
NexGen Energy
NXE
$4.5B
| $186K | ﹤0.01% |
42,114
-31,845
| -43% | -$141K |
|
817
PharmaCyte Biotech
PMCB
$7M
| $186K | ﹤0.01% |
63,608
-1,812
| -3% | -$5.3K |
|
818
Teledyne Technologies
TDY
$26.5B
| $186K | ﹤0.01% |
+466
| New | +$186K |
|
819
Scholastic
SCHL
$687M
| $185K | ﹤0.01% |
4,698
+4,400
| +1,477% | +$173K |
|
820
Equifax
EFX
$32.1B
| $183K | ﹤0.01% |
+944
| New | +$183K |
|
821
Stantec
STN
$12.8B
| $182K | ﹤0.01% |
+3,809
| New | +$182K |
|
|
DCP
822
DELISTED
DCP Midstream, LP
DCP
| $182K | ﹤0.01% |
+4,717
| New | +$182K |
|
823
Dole
DOLE
$1.33B
| $181K | ﹤0.01% |
18,762
+2,867
| +18% | +$27.7K |
|
824
Noble Corp
NE
$4.85B
| $181K | ﹤0.01% |
4,807
+41
| +0.9% | +$1.54K |
|
825
Life Time Group Holdings
LTH
$6.46B
| $180K | ﹤0.01% |
15,058
+13,988
| +1,307% | +$167K |
|