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
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
UFS
401
DELISTED
DOMTAR CORPORATION (New)
UFS
| $1.06M | ﹤0.01% |
33,571
+19,949
| +146% | +$631K |
|
402
JFrog
FROG
$5.8B
| $1.06M | ﹤0.01% |
16,824
+15,946
| +1,816% | +$1M |
|
403
Autodesk
ADSK
$69.1B
| $1.05M | ﹤0.01% |
3,449
-21,725
| -86% | -$6.63M |
|
404
Alnylam Pharmaceuticals
ALNY
$60.7B
| $1.05M | ﹤0.01% |
8,075
+7,806
| +2,902% | +$1.01M |
|
405
British American Tobacco
BTI
$123B
| $1.05M | ﹤0.01% |
27,956
+17,815
| +176% | +$668K |
|
406
Starwood Property Trust
STWD
$7.62B
| $1.05M | ﹤0.01% |
54,343
+49,292
| +976% | +$951K |
|
407
Martin Marietta Materials
MLM
$37.4B
| $1.05M | ﹤0.01% |
+3,690
| New | +$1.05M |
|
408
Invesco DB US Dollar Index Bullish Fund
UUP
$162M
| $1.05M | ﹤0.01% |
+43,168
| New | +$1.05M |
|
409
Quanta Services
PWR
$58.4B
| $1.05M | ﹤0.01% |
+14,520
| New | +$1.05M |
|
410
Aecom
ACM
$16.7B
| $1.04M | ﹤0.01% |
20,895
-26,097
| -56% | -$1.3M |
|
411
Campbell Soup
CPB
$9.8B
| $1.04M | ﹤0.01% |
21,511
-586
| -3% | -$28.3K |
|
412
Motorola Solutions
MSI
$80.5B
| $1.04M | ﹤0.01% |
+6,107
| New | +$1.04M |
|
413
Wynn Resorts
WYNN
$12.8B
| $1.04M | ﹤0.01% |
9,192
-163,771
| -95% | -$18.5M |
|
414
Verisk Analytics
VRSK
$37.1B
| $1.03M | ﹤0.01% |
+4,981
| New | +$1.03M |
|
415
ProShares UltraPro Short Dow 30
SDOW
$174M
| $1.03M | ﹤0.01% |
5,064
-2,332
| -32% | -$476K |
|
416
CryoPort
CYRX
$502M
| $1.02M | ﹤0.01% |
23,287
+23,252
| +66,434% | +$1.02M |
|
417
Jamf
JAMF
$1.23B
| $1.02M | ﹤0.01% |
33,982
+26,072
| +330% | +$780K |
|
418
KKR & Co
KKR
$125B
| $1.01M | ﹤0.01% |
25,017
+2,412
| +11% | +$97.6K |
|
|
NBIS
419
Nebius Group N.V. Class A Ordinary Shares
NBIS
$23.4B
| $1.01M | ﹤0.01% |
+14,483
| New | +$1.01M |
|
|
DM
420
DELISTED
Desktop Metal, Inc.
DM
| $1.01M | ﹤0.01% |
5,854
+1,099
| +23% | +$189K |
|
421
Lithia Motors
LAD
$8.77B
| $1M | ﹤0.01% |
+3,432
| New | +$1M |
|
|
ADAM
422
Adamas Trust, Inc. Common Stock
ADAM
$661M
| $1M | ﹤0.01% |
68,048
-73,965
| -52% | -$1.09M |
|
423
BILL Holdings
BILL
$5.42B
| $1M | ﹤0.01% |
7,352
-3,464
| -32% | -$473K |
|
424
First Trust NASDAQ Cybersecurity ETF
CIBR
$10.9B
| $1M | ﹤0.01% |
+22,616
| New | +$1M |
|
425
Reliance Steel & Aluminium
RS
$15.4B
| $999K | ﹤0.01% |
8,346
+7,992
| +2,258% | +$957K |
|