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
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
851
Jazz Pharmaceuticals
JAZZ
$7.7B
| $98K | ﹤0.01% |
+673
| New | +$98K |
|
852
3M
MMM
$81.8B
| $98K | ﹤0.01% |
+560
| New | +$98K |
|
|
VNET
853
VNET Group
VNET
$2.13B
| $98K | ﹤0.01% |
17,304
+9,052
| +110% | +$51.3K |
|
|
LCI
854
DELISTED
Lannett Company, Inc.
LCI
| $98K | ﹤0.01% |
1,340
+271
| +25% | +$19.8K |
|
|
CIM
855
Chimera Investment
CIM
$1.17B
| $97K | ﹤0.01% |
+1,724
| New | +$97K |
|
856
MGIC Investment
MTG
$6.54B
| $97K | ﹤0.01% |
7,764
+6,695
| +626% | +$83.6K |
|
857
National Storage Affiliates Trust
NSA
$2.45B
| $97K | ﹤0.01% |
4,026
-4,102
| -50% | -$98.8K |
|
858
Sun Life Financial
SLF
$33B
| $97K | ﹤0.01% |
2,438
-6,885
| -74% | -$274K |
|
|
LOXO
859
DELISTED
Loxo Oncology, Inc
LOXO
| $96K | ﹤0.01% |
+1,043
| New | +$96K |
|
|
AMRN
860
Amarin Corp
AMRN
$310M
| $95K | ﹤0.01% |
1,369
-4,289
| -76% | -$298K |
|
861
Camtek
CAMT
$3.71B
| $95K | ﹤0.01% |
18,647
+1,634
| +10% | +$8.33K |
|
862
VEON
VEON
$3.56B
| $95K | ﹤0.01% |
915
+857
| +1,478% | +$89K |
|
863
VanEck Biotech ETF
BBH
$349M
| $94K | ﹤0.01% |
+702
| New | +$94K |
|
864
Terreno Realty
TRNO
$5.92B
| $94K | ﹤0.01% |
+2,609
| New | +$94K |
|
|
WRI
865
DELISTED
Weingarten Realty Investors
WRI
| $94K | ﹤0.01% |
2,971
-13,339
| -82% | -$422K |
|
|
NE
866
DELISTED
Noble Corporation
NE
| $94K | ﹤0.01% |
+20,461
| New | +$94K |
|
|
ARAV
867
DELISTED
Aravive, Inc. Common Stock
ARAV
| $93K | ﹤0.01% |
6,336
+6,319
| +37,171% | +$92.8K |
|
|
RUSS
868
DELISTED
Direxion Daily Russia Bear 3x Shares
RUSS
| $93K | ﹤0.01% |
+4,037
| New | +$93K |
|
869
Ciena
CIEN
$18.4B
| $92K | ﹤0.01% |
4,199
-120,169
| -97% | -$2.63M |
|
|
CHS
870
DELISTED
Chicos FAS, Inc.
CHS
| $92K | ﹤0.01% |
+10,326
| New | +$92K |
|
|
RSPP
871
DELISTED
RSP Permian, Inc.
RSPP
| $92K | ﹤0.01% |
+2,663
| New | +$92K |
|
|
PDLI
872
DELISTED
PDL BioPharma, Inc.
PDLI
| $92K | ﹤0.01% |
+27,254
| New | +$92K |
|
873
Direxion Daily MSCI India Bull 2X Shares
INDL
$68M
| $91K | ﹤0.01% |
+1,171
| New | +$91K |
|
874
NETGEAR
NTGR
$823M
| $91K | ﹤0.01% |
1,918
-2,171
| -53% | -$103K |
|
875
America Movil
AMX
$59.6B
| $90K | ﹤0.01% |
5,092
+616
| +14% | +$10.9K |
|