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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1126
Valvoline
VVV
$5.13B
| $41K | ﹤0.01% |
+2,140
| New | +$41K |
|
|
UMPQ
1127
DELISTED
Umpqua Holdings Corp
UMPQ
| $41K | ﹤0.01% |
+2,586
| New | +$41K |
|
1128
Allegiant Air
ALGT
$1.19B
| $40K | ﹤0.01% |
+406
| New | +$40K |
|
1129
Brookfield Infrastructure Partners
BIP
$14.2B
| $40K | ﹤0.01% |
+1,957
| New | +$40K |
|
1130
BlueLinx
BXC
$632M
| $40K | ﹤0.01% |
+1,625
| New | +$40K |
|
1131
Costco
COST
$427B
| $40K | ﹤0.01% |
200
-16,129
| -99% | -$3.23M |
|
1132
CryoPort
CYRX
$450M
| $40K | ﹤0.01% |
3,686
-11,739
| -76% | -$127K |
|
1133
Fortuna Silver Mines
FSM
$2.57B
| $40K | ﹤0.01% |
11,164
-9,289
| -45% | -$33.3K |
|
1134
VirnetX
VHC
$77.7M
| $40K | ﹤0.01% |
853
+403
| +90% | +$18.9K |
|
|
LGF.B
1135
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $40K | ﹤0.01% |
2,751
-9,784
| -78% | -$142K |
|
|
QUOT
1136
DELISTED
Quotient Technology Inc
QUOT
| $40K | ﹤0.01% |
3,776
+3,453
| +1,069% | +$36.6K |
|
|
APU
1137
DELISTED
AmeriGas Partners, L.P.
APU
| $40K | ﹤0.01% |
+1,609
| New | +$40K |
|
1138
Element Solutions
ESI
$6.35B
| $39K | ﹤0.01% |
3,785
-2,641
| -41% | -$27.2K |
|
|
WDR
1139
DELISTED
Waddell & Reed Financial, Inc.
WDR
| $39K | ﹤0.01% |
2,159
-1,240
| -36% | -$22.4K |
|
1140
Stitch Fix
SFIX
$727M
| $38K | ﹤0.01% |
2,253
-42,843
| -95% | -$723K |
|
|
PRTY
1141
DELISTED
Party City Holdco Inc.
PRTY
| $38K | ﹤0.01% |
3,813
-2,846
| -43% | -$28.4K |
|
1142
VanEck Gaming ETF
BJK
$27.8M
| $37K | ﹤0.01% |
1,148
+872
| +316% | +$28.1K |
|
1143
CDW
CDW
$21.7B
| $37K | ﹤0.01% |
+457
| New | +$37K |
|
1144
Coherus Oncology, Inc. Common Stock
CHRS
$149M
| $37K | ﹤0.01% |
4,127
-2,971
| -42% | -$26.6K |
|
1145
Innovator IBD 50 ETF
FFTY
$80.5M
| $37K | ﹤0.01% |
1,347
-5,966
| -82% | -$164K |
|
1146
Fortinet
FTNT
$61.4B
| $37K | ﹤0.01% |
+2,695
| New | +$37K |
|
1147
MannKind Corp
MNKD
$1.69B
| $37K | ﹤0.01% |
35,193
-4,526
| -11% | -$4.76K |
|
1148
SPDR Portfolio S&P 500 Value ETF
SPYV
$28.4B
| $37K | ﹤0.01% |
+1,394
| New | +$37K |
|
1149
Savara
SVRA
$622M
| $37K | ﹤0.01% |
4,997
+3,559
| +247% | +$26.4K |
|
|
UNVR
1150
DELISTED
Univar Solutions Inc.
UNVR
| $37K | ﹤0.01% |
2,124
-7,673
| -78% | -$134K |
|