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
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MNDT
301
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $921K | ﹤0.01% |
54,199
-27,050
| -33% | -$460K |
|
302
CVS Health
CVS
$91B
| $918K | ﹤0.01% |
11,670
-19,884
| -63% | -$1.56M |
|
|
IMMU
303
DELISTED
Immunomedics Inc
IMMU
| $911K | ﹤0.01% |
43,761
-17,973
| -29% | -$374K |
|
304
Teladoc Health
TDOC
$1.38B
| $910K | ﹤0.01% |
+10,549
| New | +$910K |
|
|
CELG
305
DELISTED
Celgene Corp
CELG
| $909K | ﹤0.01% |
10,167
-115,491
| -92% | -$10.3M |
|
306
Chevron
CVX
$312B
| $905K | ﹤0.01% |
+7,407
| New | +$905K |
|
307
Melco Resorts & Entertainment
MLCO
$3.77B
| $905K | ﹤0.01% |
42,815
+7,324
| +21% | +$155K |
|
308
Precigen
PGEN
$1.23B
| $902K | ﹤0.01% |
+52,420
| New | +$902K |
|
309
Rollins
ROL
$27.8B
| $901K | ﹤0.01% |
+33,408
| New | +$901K |
|
310
AstraZeneca
AZN
$253B
| $895K | ﹤0.01% |
22,641
+8,776
| +63% | +$347K |
|
311
Ciena
CIEN
$16.8B
| $895K | ﹤0.01% |
28,666
+22,404
| +358% | +$699K |
|
312
BioMarin Pharmaceuticals
BMRN
$10.8B
| $894K | ﹤0.01% |
9,223
+2,175
| +31% | +$211K |
|
|
LPNT
313
DELISTED
LifePoint Health, Inc.
LPNT
| $894K | ﹤0.01% |
13,894
+13,305
| +2,259% | +$856K |
|
314
Yum China
YUMC
$16.2B
| $892K | ﹤0.01% |
+25,413
| New | +$892K |
|
315
Talos Energy
TALO
$1.66B
| $882K | ﹤0.01% |
26,903
+12,992
| +93% | +$426K |
|
316
Zoetis
ZTS
$66.4B
| $881K | ﹤0.01% |
9,632
-13,944
| -59% | -$1.28M |
|
317
Ventas
VTR
$31B
| $880K | ﹤0.01% |
+16,195
| New | +$880K |
|
318
DexCom
DXCM
$30.7B
| $874K | ﹤0.01% |
+24,444
| New | +$874K |
|
319
Chegg
CHGG
$169M
| $873K | ﹤0.01% |
30,718
+22,107
| +257% | +$628K |
|
320
ScottsMiracle-Gro
SMG
$3.51B
| $872K | ﹤0.01% |
11,081
+6,319
| +133% | +$497K |
|
321
Pembina Pipeline
PBA
$22.2B
| $870K | ﹤0.01% |
25,621
+22,776
| +801% | +$773K |
|
|
RDUS
322
DELISTED
Radius Health, Inc.
RDUS
| $867K | ﹤0.01% |
48,746
+28,917
| +146% | +$514K |
|
323
IQVIA
IQV
$32.2B
| $865K | ﹤0.01% |
6,671
+775
| +13% | +$100K |
|
|
UFS
324
DELISTED
DOMTAR CORPORATION (New)
UFS
| $863K | ﹤0.01% |
16,546
+497
| +3% | +$25.9K |
|
325
Vanguard Dividend Appreciation ETF
VIG
$96.1B
| $850K | ﹤0.01% |
+7,683
| New | +$850K |
|