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 |
Microsoft
MSFT
|
$101M |
| 2 |
NVIDIA
NVDA
|
$66M |
| 3 |
Citigroup
C
|
$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
$64M |
| 3 |
Meta Platforms (Facebook)
META
|
$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
$34.3M |
| 5 |
PayPal
PYPL
|
$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
BBBY
201
Bed Bath & Beyond, Inc.
BBBY
$567M
| $2.15M | ﹤0.01% |
88,210
+88,180
| +293,933% | +$2.15M |
|
202
Direxion Daily FTSE China Bear 3X Shares
YANG
$185M
| $2.13M | ﹤0.01% |
4,692
+2,227
| +90% | +$1.01M |
|
203
Vanguard Information Technology ETF
VGT
$99.9B
| $2.11M | ﹤0.01% |
6,855
+132
| +2% | +$40.6K |
|
204
Crown Castle
CCI
$41.9B
| $2.07M | ﹤0.01% |
+14,348
| New | +$2.07M |
|
205
American Electric Power
AEP
$57.8B
| $2.07M | ﹤0.01% |
23,948
-40,449
| -63% | -$3.5M |
|
206
Kraft Heinz
KHC
$32.3B
| $2.07M | ﹤0.01% |
+62,019
| New | +$2.07M |
|
|
JKS
207
JinkoSolar
JKS
$1.32B
| $2.06M | ﹤0.01% |
37,271
+11,951
| +47% | +$662K |
|
208
Check Point Software Technologies
CHKP
$20.7B
| $2.05M | ﹤0.01% |
+18,318
| New | +$2.05M |
|
|
X
209
DELISTED
US Steel
X
| $2.04M | ﹤0.01% |
112,674
-105,059
| -48% | -$1.9M |
|
210
KE Holdings
BEKE
$22.4B
| $2.03M | ﹤0.01% |
116,066
-60,637
| -34% | -$1.06M |
|
211
Apellis Pharmaceuticals
APLS
$3.55B
| $2.02M | ﹤0.01% |
29,627
+19,463
| +191% | +$1.33M |
|
212
Stride
LRN
$7.01B
| $2.02M | ﹤0.01% |
48,075
+39,841
| +484% | +$1.67M |
|
213
Dave & Buster's
PLAY
$820M
| $2.02M | ﹤0.01% |
+65,005
| New | +$2.02M |
|
214
Take-Two Interactive
TTWO
$44.2B
| $2.01M | ﹤0.01% |
18,428
-30,871
| -63% | -$3.36M |
|
215
Boot Barn
BOOT
$5.58B
| $1.99M | ﹤0.01% |
+34,024
| New | +$1.99M |
|
216
ProShares Ultra Bloomberg Natural Gas
BOIL
$129M
| $1.98M | ﹤0.01% |
369
+239
| +184% | +$1.28M |
|
217
Medtronic
MDT
$119B
| $1.96M | ﹤0.01% |
24,255
-13,469
| -36% | -$1.09M |
|
218
Realty Income
O
$54.2B
| $1.96M | ﹤0.01% |
33,617
+16,315
| +94% | +$949K |
|
219
United States Natural Gas Fund
UNG
$615M
| $1.95M | ﹤0.01% |
+20,862
| New | +$1.95M |
|
220
Post Holdings
POST
$5.88B
| $1.93M | ﹤0.01% |
23,550
+7,608
| +48% | +$623K |
|
221
CoreCivic
CXW
$2.11B
| $1.93M | ﹤0.01% |
218,094
+24,141
| +12% | +$213K |
|
222
Dell
DELL
$84.4B
| $1.89M | ﹤0.01% |
+55,414
| New | +$1.89M |
|
223
Qiagen
QGEN
$10.3B
| $1.88M | ﹤0.01% |
+43,045
| New | +$1.88M |
|
224
Lincoln National
LNC
$7.98B
| $1.86M | ﹤0.01% |
+42,415
| New | +$1.86M |
|
225
Enphase Energy
ENPH
$5.18B
| $1.86M | ﹤0.01% |
+6,706
| New | +$1.86M |
|