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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
876
Fidus Investment
FDUS
$760M
| $254K | ﹤0.01% |
12,911
+4,174
| +48% | +$82.1K |
|
877
Outset Medical
OM
$243M
| $254K | ﹤0.01% |
+3,141
| New | +$254K |
|
878
Verint Systems
VRNT
$1.23B
| $254K | ﹤0.01% |
9,428
-40,549
| -81% | -$1.09M |
|
879
Antero Midstream
AM
$8.91B
| $253K | ﹤0.01% |
+20,233
| New | +$253K |
|
880
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.35B
| $253K | ﹤0.01% |
10,588
-113,801
| -91% | -$2.72M |
|
881
Genie Energy
GNE
$404M
| $253K | ﹤0.01% |
+9,010
| New | +$253K |
|
882
VirTra
VTSI
$62.9M
| $253K | ﹤0.01% |
26,767
+25,552
| +2,103% | +$242K |
|
883
Allegiant Air
ALGT
$1.19B
| $252K | ﹤0.01% |
+3,057
| New | +$252K |
|
884
Alkermes
ALKS
$4.45B
| $249K | ﹤0.01% |
9,004
-14,991
| -62% | -$415K |
|
885
Advanced Energy
AEIS
$5.94B
| $248K | ﹤0.01% |
2,282
+1,435
| +169% | +$156K |
|
886
ProShares Ultra Bloomberg Crude Oil
UCO
$351M
| $248K | ﹤0.01% |
+9,537
| New | +$248K |
|
887
Lifestance Health
LFST
$2.03B
| $246K | ﹤0.01% |
+31,467
| New | +$246K |
|
888
Teucrium Corn Fund
CORN
$49.7M
| $245K | ﹤0.01% |
11,376
-8,146
| -42% | -$175K |
|
889
RxSight
RXST
$381M
| $245K | ﹤0.01% |
+6,085
| New | +$245K |
|
890
Teleflex
TFX
$5.76B
| $244K | ﹤0.01% |
+982
| New | +$244K |
|
891
Ametek
AME
$43.9B
| $243K | ﹤0.01% |
+1,474
| New | +$243K |
|
892
Coherus Oncology, Inc. Common Stock
CHRS
$150M
| $243K | ﹤0.01% |
73,038
+24,145
| +49% | +$80.3K |
|
893
Revolution Medicines
RVMD
$8.7B
| $243K | ﹤0.01% |
+8,502
| New | +$243K |
|
894
Xylem
XYL
$34.5B
| $243K | ﹤0.01% |
+2,129
| New | +$243K |
|
895
Ericsson
ERIC
$26.4B
| $242K | ﹤0.01% |
38,523
+9,920
| +35% | +$62.3K |
|
896
HNI Corp
HNI
$2.07B
| $242K | ﹤0.01% |
+5,792
| New | +$242K |
|
897
Zebra Technologies
ZBRA
$15.9B
| $242K | ﹤0.01% |
+886
| New | +$242K |
|
898
Applied Therapeutics
APLT
$60.6M
| $241K | ﹤0.01% |
+71,991
| New | +$241K |
|
899
James River Group
JRVR
$244M
| $241K | ﹤0.01% |
26,101
+25,868
| +11,102% | +$239K |
|
900
Dyne Therapeutics
DYN
$1.87B
| $240K | ﹤0.01% |
18,061
-17,971
| -50% | -$239K |
|