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 | |
|---|---|---|---|---|---|---|
226
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$443M
| $1.9M | ﹤0.01% |
+266,527
| New | +$1.9M |
|
|
ARI
227
Apollo Commercial Real Estate
ARI
$1.53B
| $1.89M | ﹤0.01% |
196,997
+168,776
| +598% | +$1.61M |
|
|
FLG
228
Flagstar Financial, Inc.
FLG
$5.39B
| $1.88M | ﹤0.01% |
161,887
-229,799
| -59% | -$2.67M |
|
229
Magna International
MGA
$12.9B
| $1.86M | ﹤0.01% |
+54,618
| New | +$1.86M |
|
230
Simon Property Group
SPG
$59.5B
| $1.85M | ﹤0.01% |
11,162
+110
| +1% | +$18.3K |
|
231
Entergy
ETR
$39.2B
| $1.84M | ﹤0.01% |
21,568
+16,746
| +347% | +$1.43M |
|
232
HDFC Bank
HDB
$361B
| $1.84M | ﹤0.01% |
+27,682
| New | +$1.84M |
|
233
Rubrik
RBRK
$17.6B
| $1.84M | ﹤0.01% |
30,131
-4,510
| -13% | -$275K |
|
234
Blackrock
BLK
$170B
| $1.83M | ﹤0.01% |
+1,931
| New | +$1.83M |
|
|
QXO
235
QXO Inc
QXO
$14.9B
| $1.82M | ﹤0.01% |
134,585
+52,875
| +65% | +$716K |
|
236
Alnylam Pharmaceuticals
ALNY
$59.2B
| $1.81M | ﹤0.01% |
6,704
+1,875
| +39% | +$506K |
|
|
HUYA
237
Huya Inc
HUYA
$796M
| $1.81M | ﹤0.01% |
562,323
+478,707
| +573% | +$1.54M |
|
238
Blackstone Mortgage Trust
BXMT
$3.45B
| $1.8M | ﹤0.01% |
90,138
-88,700
| -50% | -$1.77M |
|
239
Valaris
VAL
$3.64B
| $1.78M | ﹤0.01% |
+45,400
| New | +$1.78M |
|
240
Mobileye
MBLY
$12B
| $1.78M | ﹤0.01% |
123,647
+14,564
| +13% | +$210K |
|
241
NextEra Energy, Inc.
NEE
$146B
| $1.76M | ﹤0.01% |
24,864
-72,116
| -74% | -$5.11M |
|
242
Crocs
CROX
$4.72B
| $1.75M | ﹤0.01% |
16,453
+8,430
| +105% | +$895K |
|
243
Baxter International
BAX
$12.5B
| $1.74M | ﹤0.01% |
50,878
+29,628
| +139% | +$1.01M |
|
244
Lamb Weston
LW
$8.08B
| $1.74M | ﹤0.01% |
32,627
-41,502
| -56% | -$2.21M |
|
245
Invesco S&P 500 Low Volatility ETF
SPLV
$7.99B
| $1.73M | ﹤0.01% |
23,090
+11,664
| +102% | +$871K |
|
246
Noble Corp
NE
$4.54B
| $1.72M | ﹤0.01% |
72,561
+53,689
| +284% | +$1.27M |
|
247
TE Connectivity
TEL
$61.7B
| $1.71M | ﹤0.01% |
+12,115
| New | +$1.71M |
|
248
Teladoc Health
TDOC
$1.38B
| $1.71M | ﹤0.01% |
214,939
+56,859
| +36% | +$452K |
|
249
Martin Marietta Materials
MLM
$37.5B
| $1.71M | ﹤0.01% |
3,575
+354
| +11% | +$169K |
|
250
Ardelyx
ARDX
$1.57B
| $1.69M | ﹤0.01% |
343,374
+173,511
| +102% | +$851K |
|