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 | |
|---|---|---|---|---|---|---|
1426
Lindsay Corp
LNN
$1.52B
| $19K | ﹤0.01% |
216
-1,596
| -88% | -$140K |
|
1427
Matador Resources
MTDR
$5.93B
| $19K | ﹤0.01% |
+652
| New | +$19K |
|
|
NAK
1428
Northern Dynasty Minerals
NAK
$452M
| $19K | ﹤0.01% |
21,300
+5,753
| +37% | +$5.13K |
|
1429
Regal Rexnord
RRX
$9.22B
| $19K | ﹤0.01% |
264
+33
| +14% | +$2.38K |
|
1430
Tredegar Corp
TG
$279M
| $19K | ﹤0.01% |
1,060
+368
| +53% | +$6.6K |
|
1431
ProShares Ultra Materials
UYM
$35.4M
| $19K | ﹤0.01% |
1,196
+176
| +17% | +$2.8K |
|
|
CYB
1432
DELISTED
WisdomTree Chinese Yuan Strategy Fund
CYB
| $19K | ﹤0.01% |
700
-625
| -47% | -$17K |
|
|
CHS
1433
DELISTED
Chicos FAS, Inc.
CHS
| $19K | ﹤0.01% |
+2,137
| New | +$19K |
|
|
CRON
1434
Cronos Group
CRON
$969M
| $18K | ﹤0.01% |
+2,766
| New | +$18K |
|
1435
Clearway Energy Class C
CWEN
$3.39B
| $18K | ﹤0.01% |
+1,088
| New | +$18K |
|
1436
iShares MSCI Chile ETF
ECH
$713M
| $18K | ﹤0.01% |
+355
| New | +$18K |
|
1437
Enerpac Tool Group
EPAC
$2.3B
| $18K | ﹤0.01% |
786
+126
| +19% | +$2.89K |
|
1438
Energy Recovery
ERII
$764M
| $18K | ﹤0.01% |
2,241
-4,178
| -65% | -$33.6K |
|
1439
Integra LifeSciences
IART
$1.17B
| $18K | ﹤0.01% |
342
+7
| +2% | +$368 |
|
1440
NiSource
NI
$19.3B
| $18K | ﹤0.01% |
763
-1,381
| -64% | -$32.6K |
|
1441
TEGNA Inc
TGNA
$3.39B
| $18K | ﹤0.01% |
+1,659
| New | +$18K |
|
|
MMP
1442
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $18K | ﹤0.01% |
314
-5,672
| -95% | -$325K |
|
|
TRQ
1443
DELISTED
Turquoise Hill Resources Ltd
TRQ
| $18K | ﹤0.01% |
587
+191
| +48% | +$5.86K |
|
1444
Braskem
BAK
$1.33B
| $17K | ﹤0.01% |
618
-143
| -19% | -$3.93K |
|
|
BLUE
1445
DELISTED
bluebird bio
BLUE
| $17K | ﹤0.01% |
+8
| New | +$17K |
|
1446
DallasNews
DALN
$76.5M
| $17K | ﹤0.01% |
+841
| New | +$17K |
|
|
EFC
1447
Ellington Financial
EFC
$1.34B
| $17K | ﹤0.01% |
1,149
-3,944
| -77% | -$58.4K |
|
1448
ProShares UltraShort Gold
GLL
$50.5M
| $17K | ﹤0.01% |
132
-6,908
| -98% | -$890K |
|
1449
HEICO
HEI
$44.4B
| $17K | ﹤0.01% |
+249
| New | +$17K |
|
1450
iShares S&P Small-Cap 600 Growth ETF
IJT
$6.27B
| $17K | ﹤0.01% |
+200
| New | +$17K |
|