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 | |
|---|---|---|---|---|---|---|
1151
Brink's
BCO
$4.83B
| $98K | ﹤0.01% |
2,038
+1,981
| +3,475% | +$95.3K |
|
1152
BlackSky Technology
BKSY
$684M
| $98K | ﹤0.01% |
8,168
-5,204
| -39% | -$62.4K |
|
1153
Beazer Homes USA
BZH
$781M
| $98K | ﹤0.01% |
+10,165
| New | +$98K |
|
1154
Rigel Pharmaceuticals
RIGL
$681M
| $98K | ﹤0.01% |
+8,385
| New | +$98K |
|
1155
Voya Financial
VOYA
$7.44B
| $98K | ﹤0.01% |
1,622
-5,607
| -78% | -$339K |
|
1156
Apple Hospitality REIT
APLE
$2.98B
| $97K | ﹤0.01% |
+6,901
| New | +$97K |
|
|
BCTX
1157
Briacell Therapeutics
BCTX
$14M
| $97K | ﹤0.01% |
+115
| New | +$97K |
|
1158
Coca-Cola Europacific Partners
CCEP
$40.7B
| $97K | ﹤0.01% |
+2,295
| New | +$97K |
|
1159
Greenlight Captial
GLRE
$426M
| $97K | ﹤0.01% |
13,114
+8,879
| +210% | +$65.7K |
|
1160
Kodak
KODK
$486M
| $97K | ﹤0.01% |
+21,141
| New | +$97K |
|
1161
Tradr 2X Long Innovation ETF
TARK
$33.6M
| $97K | ﹤0.01% |
2,827
+1,997
| +241% | +$68.5K |
|
1162
Ultra Clean Holdings
UCTT
$1.14B
| $97K | ﹤0.01% |
+3,776
| New | +$97K |
|
1163
SurgePays
SURG
$58.6M
| $96K | ﹤0.01% |
21,202
+16,918
| +395% | +$76.6K |
|
1164
PIMCO 25+ Year Zero Coupon US Treasury Index Exchange-Traded Fund
ZROZ
$1.73B
| $96K | ﹤0.01% |
+1,038
| New | +$96K |
|
|
HLTH
1165
DELISTED
Cue Health Inc. Common Stock
HLTH
| $96K | ﹤0.01% |
31,949
-13,869
| -30% | -$41.7K |
|
1166
Anterix
ATEX
$395M
| $95K | ﹤0.01% |
2,684
-1,139
| -30% | -$40.3K |
|
1167
iShares MSCI Australia ETF
EWA
$1.55B
| $95K | ﹤0.01% |
4,864
-400
| -8% | -$7.81K |
|
1168
Pitney Bowes
PBI
$1.96B
| $95K | ﹤0.01% |
41,098
+26,602
| +184% | +$61.5K |
|
1169
Root
ROOT
$1.53B
| $95K | ﹤0.01% |
12,126
+2,160
| +22% | +$16.9K |
|
1170
Trade Desk
TTD
$22.1B
| $95K | ﹤0.01% |
1,600
-72,405
| -98% | -$4.3M |
|
1171
Centrus Energy
LEU
$4.04B
| $94K | ﹤0.01% |
2,307
-1,219
| -35% | -$49.7K |
|
1172
Omeros
OMER
$282M
| $94K | ﹤0.01% |
+29,872
| New | +$94K |
|
1173
Vanguard Tax-Exempt Bond Index Fund
VTEB
$38.8B
| $94K | ﹤0.01% |
+1,954
| New | +$94K |
|
|
VXRT
1174
DELISTED
Vaxart
VXRT
| $94K | ﹤0.01% |
43,398
+19,187
| +79% | +$41.6K |
|
|
CGAU
1175
Centerra Gold
CGAU
$1.88B
| $93K | ﹤0.01% |
+21,132
| New | +$93K |
|