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 |
Amazon
AMZN
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
851
Ametek
AME
$44.4B
| $168K | ﹤0.01% |
1,206
-3,283
| -73% | -$457K |
|
852
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.48B
| $168K | ﹤0.01% |
2,654
+1,972
| +289% | +$125K |
|
853
Vanguard S&P Mid-Cap 400 Growth ETF
IVOG
$1.19B
| $168K | ﹤0.01% |
1,990
-400
| -17% | -$33.8K |
|
854
abrdn Physical Silver Shares ETF
SIVR
$2.57B
| $168K | ﹤0.01% |
7,324
-15,870
| -68% | -$364K |
|
855
ATAI Life Sciences
ATAI
$986M
| $167K | ﹤0.01% |
+63,064
| New | +$167K |
|
856
GE Aerospace
GE
$299B
| $167K | ﹤0.01% |
3,210
| – | – |
|
|
OBE
857
Obsidian Energy
OBE
$405M
| $167K | ﹤0.01% |
25,281
-12,540
| -33% | -$82.8K |
|
|
MESO
858
Mesoblast
MESO
$1.97B
| $166K | ﹤0.01% |
28,624
+1,446
| +5% | +$8.39K |
|
859
Saic
SAIC
$4.9B
| $166K | ﹤0.01% |
1,503
+1,307
| +667% | +$144K |
|
860
Ionis Pharmaceuticals
IONS
$10.2B
| $165K | ﹤0.01% |
+4,370
| New | +$165K |
|
|
TEN
861
Tsakos Energy Navigation Ltd.
TEN
$660M
| $165K | ﹤0.01% |
+9,772
| New | +$165K |
|
862
Direxion Daily CSI 300 China A Share Bull 2X Shares
CHAU
$168M
| $164K | ﹤0.01% |
8,151
+3,702
| +83% | +$74.5K |
|
863
Lakeland Industries
LAKE
$135M
| $163K | ﹤0.01% |
+12,259
| New | +$163K |
|
864
Vertex Pharmaceuticals
VRTX
$102B
| $163K | ﹤0.01% |
566
+216
| +62% | +$62.2K |
|
|
DCBO
865
Docebo
DCBO
$867M
| $162K | ﹤0.01% |
4,899
+2,384
| +95% | +$78.8K |
|
866
Rhythm Pharmaceuticals
RYTM
$6.5B
| $162K | ﹤0.01% |
+5,581
| New | +$162K |
|
867
WisdomTree Trust WisdomTree China ex-State-Owned Enterprises Fund
CXSE
$526M
| $161K | ﹤0.01% |
+4,659
| New | +$161K |
|
|
DNB
868
DELISTED
Dun & Bradstreet
DNB
| $161K | ﹤0.01% |
+13,182
| New | +$161K |
|
869
MannKind Corp
MNKD
$1.66B
| $160K | ﹤0.01% |
30,377
-85,560
| -74% | -$451K |
|
870
SurgePays
SURG
$56.6M
| $160K | ﹤0.01% |
24,467
+3,265
| +15% | +$21.4K |
|
871
1stdibs.com
DIBS
$99.7M
| $159K | ﹤0.01% |
+31,410
| New | +$159K |
|
872
Mativ Holdings
MATV
$680M
| $159K | ﹤0.01% |
+7,613
| New | +$159K |
|
873
Amplify Alternative Harvest ETF
MJ
$171M
| $159K | ﹤0.01% |
3,117
-1,012
| -25% | -$51.6K |
|
874
Mercury Systems
MRCY
$4.38B
| $158K | ﹤0.01% |
+3,543
| New | +$158K |
|
875
Agree Realty
ADC
$8.16B
| $157K | ﹤0.01% |
2,215
+899
| +68% | +$63.7K |
|