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
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
GoPro
GPRO
$258M
| $862K | ﹤0.01% |
173,238
-28,793
| -14% | -$143K |
|
352
Nova
NVMI
$8.25B
| $859K | ﹤0.01% |
10,521
-19,871
| -65% | -$1.62M |
|
353
Gen Digital
GEN
$18B
| $856K | ﹤0.01% |
39,963
-2,924
| -7% | -$62.6K |
|
354
LivaNova
LIVN
$3.09B
| $849K | ﹤0.01% |
+15,303
| New | +$849K |
|
355
Galicia Financial Group
GGAL
$5.15B
| $847K | ﹤0.01% |
87,106
+23,971
| +38% | +$233K |
|
356
Xerox
XRX
$456M
| $843K | ﹤0.01% |
+57,744
| New | +$843K |
|
357
Kyndryl
KD
$7.49B
| $839K | ﹤0.01% |
75,453
-135,587
| -64% | -$1.51M |
|
358
ProShares UltraPro S&P 500
UPRO
$4.62B
| $832K | ﹤0.01% |
25,415
-124,224
| -83% | -$4.07M |
|
359
Vanguard Real Estate ETF
VNQ
$34.4B
| $831K | ﹤0.01% |
+10,087
| New | +$831K |
|
360
Conagra Brands
CAG
$9.27B
| $830K | ﹤0.01% |
21,457
+1,421
| +7% | +$55K |
|
361
Vanguard Information Technology ETF
VGT
$102B
| $828K | ﹤0.01% |
2,595
-4,260
| -62% | -$1.36M |
|
|
DM
362
DELISTED
Desktop Metal, Inc.
DM
| $825K | ﹤0.01% |
60,664
+16,895
| +39% | +$230K |
|
363
Genco Shipping & Trading
GNK
$772M
| $814K | ﹤0.01% |
+53,007
| New | +$814K |
|
364
Tandem Diabetes Care
TNDM
$836M
| $814K | ﹤0.01% |
+18,131
| New | +$814K |
|
365
ProShares UltraShort Yen
YCS
$30.7M
| $811K | ﹤0.01% |
30,316
+6,102
| +25% | +$163K |
|
|
BBBY
366
Bed Bath & Beyond, Inc.
BBBY
$592M
| $802K | ﹤0.01% |
41,452
-46,758
| -53% | -$905K |
|
367
S&P Global
SPGI
$165B
| $797K | ﹤0.01% |
2,381
-21,120
| -90% | -$7.07M |
|
|
RADI
368
DELISTED
Radius Global Infrastructure, Inc. Class A Common Stock
RADI
| $794K | ﹤0.01% |
+67,179
| New | +$794K |
|
369
G-III Apparel Group
GIII
$1.13B
| $786K | ﹤0.01% |
57,387
+30,612
| +114% | +$419K |
|
370
Public Service Enterprise Group
PEG
$40.8B
| $784K | ﹤0.01% |
+12,799
| New | +$784K |
|
371
Radware
RDWR
$1.1B
| $784K | ﹤0.01% |
39,699
+18,784
| +90% | +$371K |
|
372
Astria Therapeutics
ATXS
$423M
| $778K | ﹤0.01% |
+52,310
| New | +$778K |
|
373
JB Hunt Transport Services
JBHT
$13.3B
| $776K | ﹤0.01% |
4,452
-1,778
| -29% | -$310K |
|
|
ONC
374
BeOne Medicines Ltd. American Depositary Shares
ONC
$34.5B
| $776K | ﹤0.01% |
+3,530
| New | +$776K |
|
375
FIVE9
FIVN
$1.95B
| $773K | ﹤0.01% |
11,397
+8,046
| +240% | +$546K |
|