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 |
Invesco QQQ Trust
QQQ
|
+$92M |
| 2 |
Walt Disney
DIS
|
+$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$12.8M |
| 4 |
Baidu
BIDU
|
+$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$61.4M |
| 2 |
Amazon
AMZN
|
+$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$35.5M |
| 4 |
Apple
AAPL
|
+$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
+$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
626
Canadian National Railway
CNI
$58.2B
| $228K | ﹤0.01% |
+2,552
| New | +$228K |
|
627
Invesco CurrencyShares Euro Currency Trust
FXE
$529M
| $228K | ﹤0.01% |
2,139
-62,772
| -97% | -$6.69M |
|
628
Daktronics
DAKT
$856M
| $227K | ﹤0.01% |
30,496
+29,974
| +5,742% | +$223K |
|
|
CNXM
629
DELISTED
CNX Midstream Partners LP
CNXM
| $225K | ﹤0.01% |
+14,801
| New | +$225K |
|
|
MITT
630
AG Mortgage Investment Trust
MITT
$246M
| $224K | ﹤0.01% |
+4,445
| New | +$224K |
|
631
Heron Therapeutics
HRTX
$199M
| $223K | ﹤0.01% |
9,132
+5,870
| +180% | +$143K |
|
632
WisdomTree
WT
$2.01B
| $222K | ﹤0.01% |
31,549
+24,883
| +373% | +$175K |
|
|
NPKI
633
NPK International Inc.
NPKI
$881M
| $222K | ﹤0.01% |
+24,331
| New | +$222K |
|
|
RAD
634
DELISTED
Rite Aid Corporation
RAD
| $222K | ﹤0.01% |
17,505
+3,005
| +21% | +$38.1K |
|
635
Intrepid Potash
IPI
$380M
| $221K | ﹤0.01% |
+5,847
| New | +$221K |
|
636
Iridium Communications
IRDM
$2.04B
| $221K | ﹤0.01% |
+8,362
| New | +$221K |
|
|
SIX
637
DELISTED
Six Flags Entertainment Corp.
SIX
| $221K | ﹤0.01% |
4,487
+2,541
| +131% | +$125K |
|
|
EMWP
638
DELISTED
Eros Media World PLC
EMWP
| $221K | ﹤0.01% |
1,211
+1,057
| +686% | +$193K |
|
639
VanEck Brazil Small-Cap ETF
BRF
$21.2M
| $220K | ﹤0.01% |
10,324
+4,695
| +83% | +$100K |
|
640
OneSpan
OSPN
$589M
| $220K | ﹤0.01% |
+11,469
| New | +$220K |
|
641
MetLife
MET
$52.7B
| $218K | ﹤0.01% |
5,135
-45,759
| -90% | -$1.94M |
|
642
Vicor
VICR
$2.25B
| $218K | ﹤0.01% |
7,051
-1,568
| -18% | -$48.5K |
|
643
Globant
GLOB
$2.64B
| $216K | ﹤0.01% |
+3,028
| New | +$216K |
|
644
Invesco S&P 500 Equal Weight ETF
RSP
$74.2B
| $216K | ﹤0.01% |
+2,074
| New | +$216K |
|
|
GLUU
645
DELISTED
Glu Mobile Inc.
GLUU
| $215K | ﹤0.01% |
+19,675
| New | +$215K |
|
|
MIK
646
DELISTED
Michaels Stores, Inc
MIK
| $215K | ﹤0.01% |
18,827
+18,425
| +4,583% | +$210K |
|
647
Knowles
KN
$1.83B
| $213K | ﹤0.01% |
12,104
+9,544
| +373% | +$168K |
|
648
Credit Acceptance
CACC
$5.83B
| $211K | ﹤0.01% |
469
-1,121
| -71% | -$504K |
|
649
PENN Entertainment
PENN
$2.93B
| $211K | ﹤0.01% |
+10,502
| New | +$211K |
|
650
Tredegar Corp
TG
$268M
| $210K | ﹤0.01% |
13,069
+11,010
| +535% | +$177K |
|