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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.76B
| $967K | ﹤0.01% |
+7,343
| New | +$967K |
|
377
Equinox Gold
EQX
$7.78B
| $964K | ﹤0.01% |
+140,139
| New | +$964K |
|
|
AMTM
378
Amentum Holdings, Inc.
AMTM
$5.77B
| $961K | ﹤0.01% |
52,827
-167,154
| -76% | -$3.04M |
|
379
Varonis Systems
VRNS
$6.43B
| $955K | ﹤0.01% |
23,621
+18,301
| +344% | +$740K |
|
380
STMicroelectronics
STM
$23.2B
| $952K | ﹤0.01% |
+43,356
| New | +$952K |
|
381
Centrus Energy
LEU
$3.97B
| $945K | ﹤0.01% |
15,204
+2,701
| +22% | +$168K |
|
382
BJs Wholesale Club
BJ
$12.8B
| $943K | ﹤0.01% |
8,269
-18,632
| -69% | -$2.12M |
|
383
Eldorado Gold
EGO
$5.32B
| $939K | ﹤0.01% |
+55,863
| New | +$939K |
|
384
Kosmos Energy
KOS
$775M
| $938K | ﹤0.01% |
411,681
+62,744
| +18% | +$143K |
|
385
iShares MSCI USA Momentum Factor ETF
MTUM
$18.4B
| $938K | ﹤0.01% |
+4,641
| New | +$938K |
|
386
DXC Technology
DXC
$2.58B
| $936K | ﹤0.01% |
+54,912
| New | +$936K |
|
387
Raymond James Financial
RJF
$33B
| $931K | ﹤0.01% |
+6,706
| New | +$931K |
|
388
Ovintiv
OVV
$10.7B
| $930K | ﹤0.01% |
21,735
+10,330
| +91% | +$442K |
|
389
LCI Industries
LCII
$2.51B
| $923K | ﹤0.01% |
+10,561
| New | +$923K |
|
390
Interactive Brokers
IBKR
$27.7B
| $921K | ﹤0.01% |
+22,264
| New | +$921K |
|
391
Bilibili
BILI
$9.96B
| $919K | ﹤0.01% |
48,093
-951,856
| -95% | -$18.2M |
|
|
GOGL
392
DELISTED
Golden Ocean Group
GOGL
| $918K | ﹤0.01% |
115,076
+36,276
| +46% | +$289K |
|
393
Mettler-Toledo International
MTD
$26.5B
| $912K | ﹤0.01% |
773
+762
| +6,927% | +$899K |
|
394
GitLab
GTLB
$8.03B
| $908K | ﹤0.01% |
+19,336
| New | +$908K |
|
|
DNB
395
DELISTED
Dun & Bradstreet
DNB
| $902K | ﹤0.01% |
+100,911
| New | +$902K |
|
396
Harrow
HROW
$1.45B
| $898K | ﹤0.01% |
+33,780
| New | +$898K |
|
397
Boston Properties
BXP
$11.5B
| $897K | ﹤0.01% |
13,354
-705
| -5% | -$47.4K |
|
398
ProShares UltraShort Bloomberg Natural Gas
KOLD
$168M
| $896K | ﹤0.01% |
45,788
+5,456
| +14% | +$107K |
|
399
Quest Diagnostics
DGX
$20.4B
| $889K | ﹤0.01% |
5,259
+4,171
| +383% | +$705K |
|
400
Ingredion
INGR
$8.16B
| $882K | ﹤0.01% |
6,530
-862
| -12% | -$116K |
|