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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1501
KBR
KBR
$6.36B
| $28K | ﹤0.01% |
1,274
-6,428
| -83% | -$141K |
|
1502
NBT Bancorp
NBTB
$2.27B
| $28K | ﹤0.01% |
+1,051
| New | +$28K |
|
1503
Safety Insurance
SAFT
$1.1B
| $28K | ﹤0.01% |
416
+158
| +61% | +$10.6K |
|
|
TGB
1504
Taseko Mines
TGB
$1.12B
| $28K | ﹤0.01% |
27,117
+26,517
| +4,420% | +$27.4K |
|
1505
ProShares UltraPro Short 20+ Year Treasury
TTT
$21.8M
| $28K | ﹤0.01% |
995
-3,129
| -76% | -$88.1K |
|
|
CAMP
1506
DELISTED
CalAmp Corp.
CAMP
| $28K | ﹤0.01% |
175
-202
| -54% | -$32.3K |
|
1507
Fossil Group
FOSL
$168M
| $27K | ﹤0.01% |
4,752
-6,661
| -58% | -$37.8K |
|
1508
Fortive
FTV
$16.5B
| $27K | ﹤0.01% |
436
-1,290
| -75% | -$79.9K |
|
1509
iShares US Medical Devices ETF
IHI
$4.27B
| $27K | ﹤0.01% |
546
-1,482
| -73% | -$73.3K |
|
1510
Natural Resource Partners
NRP
$1.34B
| $27K | ﹤0.01% |
2,318
-3,758
| -62% | -$43.8K |
|
1511
Schwab US Large-Cap Growth ETF
SCHG
$49.5B
| $27K | ﹤0.01% |
1,880
+280
| +18% | +$4.02K |
|
|
LDL
1512
DELISTED
Lydall, Inc.
LDL
| $27K | ﹤0.01% |
1,661
-562
| -25% | -$9.14K |
|
|
KNL
1513
DELISTED
Knoll, Inc.
KNL
| $27K | ﹤0.01% |
+2,315
| New | +$27K |
|
1514
Dianthus Therapeutics
DNTH
$1.48B
| $26K | ﹤0.01% |
241
+213
| +761% | +$23K |
|
1515
Genco Shipping & Trading
GNK
$774M
| $26K | ﹤0.01% |
3,827
-2,745
| -42% | -$18.6K |
|
1516
Gray Television
GTN
$598M
| $26K | ﹤0.01% |
1,956
-13,436
| -87% | -$179K |
|
1517
iShares Self-Driving EV and Tech ETF
IDRV
$162M
| $26K | ﹤0.01% |
+791
| New | +$26K |
|
1518
KORU Medical Systems
KRMD
$181M
| $26K | ﹤0.01% |
+3,701
| New | +$26K |
|
1519
MacroGenics
MGNX
$100M
| $26K | ﹤0.01% |
1,034
-896
| -46% | -$22.5K |
|
1520
Nabors Industries
NBR
$617M
| $26K | ﹤0.01% |
1,093
-41
| -4% | -$975 |
|
|
CHS
1521
DELISTED
Chicos FAS, Inc.
CHS
| $26K | ﹤0.01% |
26,803
-17,456
| -39% | -$16.9K |
|
|
RPT
1522
DELISTED
RPT Realty Common Shares of Beneficial Interest (MD)
RPT
| $26K | ﹤0.01% |
+4,814
| New | +$26K |
|
1523
Cytosorbents Corp
CTSO
$58.9M
| $25K | ﹤0.01% |
3,155
-9,172
| -74% | -$72.7K |
|
1524
Invesco DB Energy Fund
DBE
$49.1M
| $25K | ﹤0.01% |
2,644
+94
| +4% | +$889 |
|
|
EFC
1525
Ellington Financial
EFC
$1.34B
| $25K | ﹤0.01% |
+2,056
| New | +$25K |
|