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 |
NVIDIA
NVDA
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
CARB
1001
DELISTED
Carbonite Inc
CARB
| $62K | ﹤0.01% |
2,384
-2,812
| -54% | -$73.1K |
|
|
CELG
1002
DELISTED
Celgene Corp
CELG
| $62K | ﹤0.01% |
673
+573
| +573% | +$52.8K |
|
1003
Nice
NICE
$8.82B
| $61K | ﹤0.01% |
446
+265
| +146% | +$36.2K |
|
1004
Oppenheimer Holdings
OPY
$806M
| $61K | ﹤0.01% |
2,246
+1,701
| +312% | +$46.2K |
|
|
CRZO
1005
DELISTED
Carrizo Oil & Gas Inc
CRZO
| $61K | ﹤0.01% |
6,131
-14,798
| -71% | -$147K |
|
|
TEUM
1006
DELISTED
Pareteum Corporation
TEUM
| $61K | ﹤0.01% |
23,605
+4,233
| +22% | +$10.9K |
|
1007
Global X MSCI China Consumer Discretionary ETF
CHIQ
$245M
| $60K | ﹤0.01% |
3,729
-4,041
| -52% | -$65K |
|
1008
Mohawk Industries
MHK
$8.45B
| $60K | ﹤0.01% |
410
-3,695
| -90% | -$541K |
|
1009
Toro Company
TTC
$7.76B
| $60K | ﹤0.01% |
+903
| New | +$60K |
|
1010
ProShares UltraPro Russell2000
URTY
$401M
| $60K | ﹤0.01% |
817
+731
| +850% | +$53.7K |
|
|
SECO
1011
DELISTED
Secoo Holding Limited ADR
SECO
| $60K | ﹤0.01% |
+795
| New | +$60K |
|
1012
Invesco DB Commodity Index Tracking Fund
DBC
$1.28B
| $59K | ﹤0.01% |
3,782
+2,275
| +151% | +$35.5K |
|
1013
Digimarc
DMRC
$204M
| $59K | ﹤0.01% |
1,335
-9,438
| -88% | -$417K |
|
1014
MPLX
MPLX
$52.1B
| $59K | ﹤0.01% |
+1,847
| New | +$59K |
|
|
BECN
1015
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $59K | ﹤0.01% |
1,620
+530
| +49% | +$19.3K |
|
1016
ProShares UltraShort Gold
GLL
$50.5M
| $58K | ﹤0.01% |
+478
| New | +$58K |
|
1017
ODP
ODP
$624M
| $58K | ﹤0.01% |
2,860
+1,669
| +140% | +$33.8K |
|
1018
SPS Commerce
SPSC
$4B
| $58K | ﹤0.01% |
1,142
+914
| +401% | +$46.4K |
|
1019
Vera Bradley
VRA
$61.5M
| $58K | ﹤0.01% |
+4,871
| New | +$58K |
|
1020
DigitalBridge
DBRG
$2.2B
| $57K | ﹤0.01% |
+2,862
| New | +$57K |
|
1021
Genie Energy
GNE
$404M
| $57K | ﹤0.01% |
5,388
+4,864
| +928% | +$51.5K |
|
1022
Energy Recovery
ERII
$764M
| $56K | ﹤0.01% |
5,460
-22
| -0.4% | -$226 |
|
1023
Match Group
MTCH
$9.08B
| $56K | ﹤0.01% |
839
-22,317
| -96% | -$1.49M |
|
1024
Viper Energy
VNOM
$6.51B
| $56K | ﹤0.01% |
+1,822
| New | +$56K |
|
1025
Healthpeak Properties
DOC
$12.6B
| $55K | ﹤0.01% |
1,729
-3,025
| -64% | -$96.2K |
|