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 | |
|---|---|---|---|---|---|---|
1051
AvePoint
AVPT
$3.31B
| $126K | ﹤0.01% |
31,545
-5,671
| -15% | -$22.7K |
|
1052
Ubiquiti
UI
$36.6B
| $126K | ﹤0.01% |
430
-167
| -28% | -$48.9K |
|
1053
Caribou Biosciences
CRBU
$168M
| $125K | ﹤0.01% |
11,861
+4,954
| +72% | +$52.2K |
|
1054
KraneShares European Carbon Allowance Strategy ETF
KEUA
$7.63M
| $125K | ﹤0.01% |
5,481
-2,079
| -28% | -$47.4K |
|
1055
Lucid Motors
LCID
$5.92B
| $125K | ﹤0.01% |
900
| – | – |
|
1056
SouthState Bank Corporation
SSB
$10.2B
| $124K | ﹤0.01% |
1,578
+1,175
| +292% | +$92.3K |
|
1057
GE Aerospace
GE
$299B
| $123K | ﹤0.01% |
3,210
-165,896
| -98% | -$6.36M |
|
|
DOC
1058
DELISTED
PHYSICIANS REALTY TRUST
DOC
| $123K | ﹤0.01% |
8,226
+875
| +12% | +$13.1K |
|
1059
Blend Labs
BLND
$1.12B
| $122K | ﹤0.01% |
55,314
-64,014
| -54% | -$141K |
|
1060
HF Sinclair
DINO
$9.56B
| $122K | ﹤0.01% |
+2,277
| New | +$122K |
|
1061
Allot
ALLT
$426M
| $121K | ﹤0.01% |
30,904
+21,163
| +217% | +$82.9K |
|
1062
PRA Group
PRAA
$657M
| $121K | ﹤0.01% |
+3,689
| New | +$121K |
|
|
MTTR
1063
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $121K | ﹤0.01% |
32,148
+26,733
| +494% | +$101K |
|
1064
MindMed
MNMD
$718M
| $120K | ﹤0.01% |
34,397
+33,661
| +4,574% | +$117K |
|
|
LENZ
1065
LENZ Therapeutics
LENZ
$1.18B
| $120K | ﹤0.01% |
5,448
-4,422
| -45% | -$97.4K |
|
1066
Golar LNG
GLNG
$4.16B
| $119K | ﹤0.01% |
4,779
+3,294
| +222% | +$82K |
|
|
MAG
1067
DELISTED
MAG Silver
MAG
| $119K | ﹤0.01% |
+9,585
| New | +$119K |
|
1068
Century Aluminum
CENX
$2.44B
| $118K | ﹤0.01% |
22,437
-293
| -1% | -$1.54K |
|
1069
FibroGen
FGEN
$48.6M
| $117K | ﹤0.01% |
361
+195
| +117% | +$63.2K |
|
1070
Lightwave Logic
LWLG
$417M
| $117K | ﹤0.01% |
16,032
-1,052
| -6% | -$7.68K |
|
1071
Upbound Group
UPBD
$1.45B
| $117K | ﹤0.01% |
+6,686
| New | +$117K |
|
|
LOGC
1072
DELISTED
ContextLogic
LOGC
| $117K | ﹤0.01% |
5,330
+2,676
| +101% | +$58.7K |
|
1073
Dole
DOLE
$1.3B
| $116K | ﹤0.01% |
15,895
+12,731
| +402% | +$92.9K |
|
1074
Goldman Sachs Access Investment Grade Corporate Bond ETF
GIGB
$689M
| $116K | ﹤0.01% |
+2,707
| New | +$116K |
|
1075
iShares Russell 1000 ETF
IWB
$44.5B
| $116K | ﹤0.01% |
+589
| New | +$116K |
|