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 | |
|---|---|---|---|---|---|---|
326
Penumbra
PEN
$10.7B
| $969K | ﹤0.01% |
4,359
+1,708
| +64% | +$380K |
|
|
LHCG
327
DELISTED
LHC Group LLC
LHCG
| $968K | ﹤0.01% |
5,990
+5,658
| +1,704% | +$914K |
|
328
Jabil
JBL
$22.9B
| $966K | ﹤0.01% |
+14,166
| New | +$966K |
|
329
Acadia Realty Trust
AKR
$2.54B
| $952K | ﹤0.01% |
66,398
+32,024
| +93% | +$459K |
|
330
Cal-Maine
CALM
$5.26B
| $950K | ﹤0.01% |
+17,463
| New | +$950K |
|
331
Cognyte Software
CGNT
$605M
| $943K | ﹤0.01% |
303,381
+283,230
| +1,406% | +$880K |
|
|
BLUE
332
DELISTED
bluebird bio
BLUE
| $939K | ﹤0.01% |
6,785
-1,237
| -15% | -$171K |
|
333
Chegg
CHGG
$173M
| $939K | ﹤0.01% |
37,172
+1,331
| +4% | +$33.6K |
|
334
TC Energy
TRP
$53.9B
| $938K | ﹤0.01% |
+23,554
| New | +$938K |
|
335
Global X Uranium ETF
URA
$4.34B
| $932K | ﹤0.01% |
46,454
-46,570
| -50% | -$934K |
|
336
Service Corp International
SCI
$10.9B
| $930K | ﹤0.01% |
+13,451
| New | +$930K |
|
337
Aecom
ACM
$16.6B
| $912K | ﹤0.01% |
+10,748
| New | +$912K |
|
338
New Fortress Energy
NFE
$381M
| $907K | ﹤0.01% |
21,393
+16,782
| +364% | +$712K |
|
339
Xcel Energy
XEL
$42.6B
| $901K | ﹤0.01% |
12,858
-16,084
| -56% | -$1.13M |
|
340
lululemon athletica
LULU
$19.5B
| $898K | ﹤0.01% |
2,805
-17,205
| -86% | -$5.51M |
|
341
Amylyx Pharmaceuticals
AMLX
$1.03B
| $895K | ﹤0.01% |
24,248
-92,356
| -79% | -$3.41M |
|
|
ISEE
342
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $891K | ﹤0.01% |
41,635
+18,712
| +82% | +$400K |
|
343
89bio
ETNB
$1.24B
| $887K | ﹤0.01% |
+69,683
| New | +$887K |
|
344
Aon
AON
$78B
| $881K | ﹤0.01% |
+2,936
| New | +$881K |
|
345
Digimarc
DMRC
$204M
| $881K | ﹤0.01% |
47,652
+21,485
| +82% | +$397K |
|
346
Advance Auto Parts
AAP
$3.56B
| $880K | ﹤0.01% |
5,986
+1,796
| +43% | +$264K |
|
347
Zillow
ZG
$20B
| $874K | ﹤0.01% |
28,034
+13,968
| +99% | +$435K |
|
348
Teucrium Wheat Fund
WEAT
$116M
| $873K | ﹤0.01% |
109,438
+90,497
| +478% | +$722K |
|
349
Esperion Therapeutics
ESPR
$508M
| $868K | ﹤0.01% |
+139,427
| New | +$868K |
|
350
3M
MMM
$81.6B
| $865K | ﹤0.01% |
8,632
-23,978
| -74% | -$2.4M |
|