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 | |
|---|---|---|---|---|---|---|
1276
Sasol
SSL
$4.46B
| $71K | ﹤0.01% |
4,508
+1,816
| +67% | +$28.6K |
|
1277
Blue Bird Corp
BLBD
$1.84B
| $71K | ﹤0.01% |
8,535
+4,503
| +112% | +$37.5K |
|
1278
Cellebrite
CLBT
$4.11B
| $71K | ﹤0.01% |
18,363
+8,319
| +83% | +$32.2K |
|
1279
Offerpad Solutions
OPAD
$133M
| $70K | ﹤0.01% |
+3,875
| New | +$70K |
|
1280
Riot Platforms
RIOT
$5.87B
| $70K | ﹤0.01% |
10,100
| – | – |
|
1281
RLJ Lodging Trust
RLJ
$1.15B
| $70K | ﹤0.01% |
6,972
+3,257
| +88% | +$32.7K |
|
1282
Soho House & Co
SHCO
$1.73B
| $70K | ﹤0.01% |
+14,992
| New | +$70K |
|
1283
Simpson Manufacturing
SSD
$7.86B
| $70K | ﹤0.01% |
895
+311
| +53% | +$24.3K |
|
|
NESR
1284
National Energy Services Reunited Corp. Ordinary Shares
NESR
$1.02B
| $70K | ﹤0.01% |
11,886
+11,577
| +3,747% | +$68.2K |
|
|
OMGA
1285
DELISTED
Omega Therapeutics, Inc. Common Stock
OMGA
| $70K | ﹤0.01% |
12,971
+5,076
| +64% | +$27.4K |
|
1286
Group 1 Automotive
GPI
$6.03B
| $69K | ﹤0.01% |
484
+7
| +1% | +$998 |
|
1287
Movado Group
MOV
$438M
| $69K | ﹤0.01% |
2,462
+1,742
| +242% | +$48.8K |
|
1288
Uranium Energy
UEC
$5.27B
| $69K | ﹤0.01% |
19,972
-278,466
| -93% | -$962K |
|
1289
Vanguard S&P Small-Cap 600 ETF
VIOO
$3.04B
| $69K | ﹤0.01% |
+860
| New | +$69K |
|
1290
Viking Therapeutics
VKTX
$2.79B
| $69K | ﹤0.01% |
+25,585
| New | +$69K |
|
1291
VistaGen Therapeutics
VTGN
$104M
| $69K | ﹤0.01% |
15,308
+13,691
| +847% | +$61.7K |
|
|
JJN
1292
DELISTED
iPath Series B Bloomberg Nickel Subindex Total ReturnSM ETN
JJN
| $69K | ﹤0.01% |
2,451
+639
| +35% | +$18K |
|
1293
Aurinia Pharmaceuticals
AUPH
$1.68B
| $68K | ﹤0.01% |
9,108
-53,313
| -85% | -$398K |
|
1294
Cantaloupe
CTLP
$792M
| $68K | ﹤0.01% |
19,568
-100,818
| -84% | -$350K |
|
1295
Inovio Pharmaceuticals
INO
$126M
| $68K | ﹤0.01% |
3,323
-1,234
| -27% | -$25.3K |
|
1296
Lloyds Banking Group
LYG
$67B
| $68K | ﹤0.01% |
38,512
+2,118
| +6% | +$3.74K |
|
1297
SEI Investments
SEIC
$10.7B
| $68K | ﹤0.01% |
+1,391
| New | +$68K |
|
1298
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$244M
| $68K | ﹤0.01% |
+203
| New | +$68K |
|
|
GTM
1299
ZoomInfo Technologies
GTM
$3.72B
| $68K | ﹤0.01% |
1,640
-2,393
| -59% | -$99.2K |
|
1300
BARK
BARK
$150M
| $67K | ﹤0.01% |
37,091
-11,872
| -24% | -$21.4K |
|