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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1476
AvidXchange
AVDX
$2.07B
| $43K | ﹤0.01% |
5,162
+2,835
| +122% | +$23.6K |
|
1477
Global X DAX Germany ETF
DAX
$304M
| $43K | ﹤0.01% |
+2,117
| New | +$43K |
|
1478
OraSure Technologies
OSUR
$242M
| $43K | ﹤0.01% |
11,520
+2,428
| +27% | +$9.06K |
|
1479
Rogers Communications
RCI
$19.1B
| $43K | ﹤0.01% |
+1,140
| New | +$43K |
|
1480
ProShares Ultra Gold
UGL
$759M
| $43K | ﹤0.01% |
3,672
-1,536
| -29% | -$18K |
|
|
CRHC
1481
DELISTED
Cohn Robbins Holdings Corp.
CRHC
| $43K | ﹤0.01% |
+4,369
| New | +$43K |
|
1482
BRC Inc
BRCC
$189M
| $42K | ﹤0.01% |
+5,538
| New | +$42K |
|
1483
iShares GSCI Commodity Dynamic Roll Strategy ETF
COMT
$648M
| $42K | ﹤0.01% |
1,201
+1,019
| +560% | +$35.6K |
|
1484
NETSCOUT
NTCT
$1.86B
| $42K | ﹤0.01% |
1,345
-19,672
| -94% | -$614K |
|
1485
Terreno Realty
TRNO
$6.04B
| $42K | ﹤0.01% |
+807
| New | +$42K |
|
1486
Yext
YEXT
$1.08B
| $42K | ﹤0.01% |
9,562
-83,730
| -90% | -$368K |
|
|
ZH
1487
Zhihu
ZH
$462M
| $42K | ﹤0.01% |
6,706
+3,936
| +142% | +$24.7K |
|
1488
Red Robin
RRGB
$117M
| $41K | ﹤0.01% |
+6,139
| New | +$41K |
|
1489
Applied Optoelectronics
AAOI
$1.81B
| $41K | ﹤0.01% |
+15,229
| New | +$41K |
|
1490
Descartes Systems
DSGX
$8.75B
| $41K | ﹤0.01% |
656
+27
| +4% | +$1.69K |
|
1491
Flowers Foods
FLO
$2.77B
| $41K | ﹤0.01% |
+1,686
| New | +$41K |
|
1492
Hallador Energy
HNRG
$843M
| $41K | ﹤0.01% |
7,305
+5,591
| +326% | +$31.4K |
|
1493
iShares Select U.S. REIT ETF
ICF
$1.9B
| $41K | ﹤0.01% |
776
-4,121
| -84% | -$218K |
|
1494
Quest Resource Holding
QRHC
$32.3M
| $41K | ﹤0.01% |
4,920
+2,615
| +113% | +$21.8K |
|
1495
First Trust NASDAQ-100 Technology Index Fund
QTEC
$2.86B
| $41K | ﹤0.01% |
400
-1,797
| -82% | -$184K |
|
1496
Sonder
SOND
$23.3M
| $41K | ﹤0.01% |
1,236
+653
| +112% | +$21.7K |
|
1497
UNIFI
UFI
$86.1M
| $41K | ﹤0.01% |
+4,394
| New | +$41K |
|
1498
Viasat
VSAT
$4.03B
| $41K | ﹤0.01% |
1,364
-1,250
| -48% | -$37.6K |
|
1499
Direxion Daily Dow Jones Internet Bull 3X Shares
WEBL
$169M
| $41K | ﹤0.01% |
5,767
+4,844
| +525% | +$34.4K |
|
|
WIRE
1500
DELISTED
Encore Wire Corp
WIRE
| $41K | ﹤0.01% |
360
-2,152
| -86% | -$245K |
|