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 |
Tesla
TSLA
|
+$27.1M |
| 2 |
Netflix
NFLX
|
+$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
+$18.3M |
| 5 |
Alibaba
BABA
|
+$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
+$71.9M |
| 2 |
Micron Technology
MU
|
+$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$26.3M |
| 4 |
Boeing
BA
|
+$21M |
| 5 |
Citigroup
C
|
+$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
776
Hilton Grand Vacations
HGV
$4.05B
| $141K | 0.01% |
+3,283
| New | +$141K |
|
777
MGP Ingredients
MGPI
$589M
| $141K | 0.01% |
+1,578
| New | +$141K |
|
778
ConocoPhillips
COP
$117B
| $140K | 0.01% |
2,372
-28,853
| -92% | -$1.7M |
|
779
Fresh Del Monte Produce
FDP
$1.7B
| $140K | 0.01% |
3,112
+2,559
| +463% | +$115K |
|
780
iShares Core S&P Mid-Cap ETF
IJH
$101B
| $140K | 0.01% |
+3,755
| New | +$140K |
|
781
Sanmina
SANM
$6.45B
| $140K | 0.01% |
+5,382
| New | +$140K |
|
|
TSRO
782
DELISTED
TESARO, Inc.
TSRO
| $140K | 0.01% |
2,460
-3,005
| -55% | -$171K |
|
783
Natural Resource Partners
NRP
$1.35B
| $139K | 0.01% |
4,871
+4,070
| +508% | +$116K |
|
|
NVEE
784
DELISTED
NV5 Global
NVEE
| $139K | 0.01% |
+10,044
| New | +$139K |
|
|
SRG
785
Seritage Growth Properties
SRG
$252M
| $139K | 0.01% |
3,912
-394
| -9% | -$14K |
|
|
CZZ
786
DELISTED
Cosan Limited
CZZ
| $139K | 0.01% |
13,450
+13,358
| +14,520% | +$138K |
|
787
Liberty Global Class C
LBTYK
$4.03B
| $138K | 0.01% |
+4,535
| New | +$138K |
|
788
Ultragenyx Pharmaceutical
RARE
$3B
| $137K | 0.01% |
+2,696
| New | +$137K |
|
789
FormFactor
FORM
$2.34B
| $136K | 0.01% |
+9,968
| New | +$136K |
|
790
Pool Corp
POOL
$12.2B
| $136K | 0.01% |
+931
| New | +$136K |
|
|
NLSN
791
DELISTED
Nielsen Holdings plc
NLSN
| $136K | 0.01% |
4,294
-7,577
| -64% | -$240K |
|
792
Principal Financial Group
PFG
$18.1B
| $135K | 0.01% |
+2,221
| New | +$135K |
|
793
ProShares UltraShort Bloomberg Crude Oil
SCO
$125M
| $135K | 0.01% |
+340
| New | +$135K |
|
794
Veracyte
VCYT
$2.53B
| $135K | 0.01% |
24,375
+6,203
| +34% | +$34.4K |
|
|
LFC
795
DELISTED
China Life Insurance Company Ltd.
LFC
| $135K | 0.01% |
9,678
-1,849
| -16% | -$25.8K |
|
|
SNR
796
DELISTED
NEW SENIOR INVESTMENT GROUP INC.
SNR
| $135K | 0.01% |
16,599
+7,850
| +90% | +$63.8K |
|
797
Ericsson
ERIC
$26.8B
| $134K | 0.01% |
20,942
+14,323
| +216% | +$91.6K |
|
798
Acadia Realty Trust
AKR
$2.58B
| $133K | 0.01% |
+5,413
| New | +$133K |
|
799
Vicor
VICR
$2.29B
| $133K | 0.01% |
4,687
+4,244
| +958% | +$120K |
|
|
ROCC
800
DELISTED
Ranger Oil Corporation Class A Common Stock
ROCC
| $133K | 0.01% |
+3,798
| New | +$133K |
|