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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
GFL Environmental
GFL
$17.4B
| $985K | ﹤0.01% |
+25,398
| New | +$985K |
|
377
NCR Voyix
VYX
$1.79B
| $985K | ﹤0.01% |
63,761
-7,780
| -11% | -$120K |
|
|
KDNY
378
DELISTED
Chinook Therapeutics, Inc. Common Stock
KDNY
| $981K | ﹤0.01% |
+25,538
| New | +$981K |
|
379
FTI Consulting
FCN
$5.41B
| $979K | ﹤0.01% |
5,148
+5,033
| +4,377% | +$957K |
|
380
Matador Resources
MTDR
$5.88B
| $974K | ﹤0.01% |
18,634
+10,660
| +134% | +$557K |
|
381
PubMatic
PUBM
$389M
| $973K | ﹤0.01% |
53,240
+25,858
| +94% | +$473K |
|
|
VLRS
382
Controladora Vuela Compañía de Aviación
VLRS
$680M
| $972K | ﹤0.01% |
+69,679
| New | +$972K |
|
383
Thor Industries
THO
$5.79B
| $963K | ﹤0.01% |
9,307
+4,382
| +89% | +$453K |
|
384
Green Plains
GPRE
$657M
| $961K | ﹤0.01% |
+29,815
| New | +$961K |
|
385
Replimune Group
REPL
$454M
| $959K | ﹤0.01% |
+41,332
| New | +$959K |
|
386
RingCentral
RNG
$2.88B
| $956K | ﹤0.01% |
29,222
+14,160
| +94% | +$463K |
|
387
Vishay Intertechnology
VSH
$2.07B
| $956K | ﹤0.01% |
+32,544
| New | +$956K |
|
388
Rogers Corp
ROG
$1.44B
| $955K | ﹤0.01% |
5,900
| – | – |
|
389
Clear Secure
YOU
$3.52B
| $954K | ﹤0.01% |
41,196
-30,322
| -42% | -$702K |
|
390
Cassava Sciences
SAVA
$105M
| $950K | ﹤0.01% |
38,751
+34,351
| +781% | +$842K |
|
391
Sprott Uranium Miners ETF
URNM
$1.75B
| $944K | ﹤0.01% |
28,146
+14,693
| +109% | +$493K |
|
|
PARA
392
DELISTED
Paramount Global Class B
PARA
| $932K | ﹤0.01% |
58,636
-334,114
| -85% | -$5.31M |
|
393
Amylyx Pharmaceuticals
AMLX
$937M
| $928K | ﹤0.01% |
+43,055
| New | +$928K |
|
394
KLA
KLAC
$121B
| $926K | ﹤0.01% |
+1,910
| New | +$926K |
|
395
Realty Income
O
$54.4B
| $926K | ﹤0.01% |
15,495
-4,558
| -23% | -$272K |
|
396
Kinross Gold
KGC
$27.3B
| $922K | ﹤0.01% |
193,493
+146,893
| +315% | +$700K |
|
|
BPMC
397
DELISTED
Blueprint Medicines
BPMC
| $917K | ﹤0.01% |
14,524
+14,234
| +4,908% | +$899K |
|
|
CNH
398
CNH Industrial
CNH
$14.2B
| $909K | ﹤0.01% |
63,188
+26,636
| +73% | +$383K |
|
399
Amplify Junior Silver Miners ETF
SILJ
$2.09B
| $907K | ﹤0.01% |
96,792
+21,049
| +28% | +$197K |
|
400
Kohl's
KSS
$1.86B
| $905K | ﹤0.01% |
39,268
-71,359
| -65% | -$1.64M |
|