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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1201
Kornit Digital
KRNT
$662M
| $67K | ﹤0.01% |
2,605
-2,770
| -52% | -$71.2K |
|
1202
MannKind Corp
MNKD
$1.71B
| $67K | ﹤0.01% |
10,806
-33,697
| -76% | -$209K |
|
1203
NBT Bancorp
NBTB
$2.26B
| $66K | ﹤0.01% |
1,498
-1,303
| -47% | -$57.4K |
|
1204
Banco Santander
SAN
$150B
| $66K | ﹤0.01% |
13,010
-11,129
| -46% | -$56.5K |
|
1205
scPharmaceuticals
SCPH
$301M
| $66K | ﹤0.01% |
+14,618
| New | +$66K |
|
1206
GeoPark
GPRK
$331M
| $65K | ﹤0.01% |
8,335
-6,096
| -42% | -$47.5K |
|
1207
Kodiak Gas Services
KGS
$2.87B
| $65K | ﹤0.01% |
+2,274
| New | +$65K |
|
1208
Microvision
MVIS
$346M
| $65K | ﹤0.01% |
57,748
+19,668
| +52% | +$22.1K |
|
1209
T-Rex 2X Long NVIDIA Daily Target ETF
NVDX
$659M
| $65K | ﹤0.01% |
+4,645
| New | +$65K |
|
1210
ZipRecruiter
ZIP
$404M
| $65K | ﹤0.01% |
+6,933
| New | +$65K |
|
1211
Neogen
NEOG
$1.25B
| $64K | ﹤0.01% |
3,828
-1,656
| -30% | -$27.7K |
|
1212
Envista
NVST
$3.45B
| $64K | ﹤0.01% |
+3,274
| New | +$64K |
|
1213
Atea Pharmaceuticals
AVIR
$250M
| $63K | ﹤0.01% |
19,031
-71,306
| -79% | -$236K |
|
1214
BlackSky Technology
BKSY
$617M
| $63K | ﹤0.01% |
13,476
+12,939
| +2,409% | +$60.5K |
|
1215
iShares GSCI Commodity Dynamic Roll Strategy ETF
COMT
$650M
| $63K | ﹤0.01% |
2,436
+2,271
| +1,376% | +$58.7K |
|
1216
StealthGas
GASS
$272M
| $63K | ﹤0.01% |
+9,260
| New | +$63K |
|
1217
iShares Russell Top 200 Growth ETF
IWY
$15.3B
| $63K | ﹤0.01% |
290
-35
| -11% | -$7.6K |
|
1218
Kamada
KMDA
$411M
| $63K | ﹤0.01% |
11,903
-11,036
| -48% | -$58.4K |
|
1219
PIMCO 25+ Year Zero Coupon US Treasury Index Exchange-Traded Fund
ZROZ
$1.74B
| $63K | ﹤0.01% |
770
-3,873
| -83% | -$317K |
|
|
ALLK
1220
DELISTED
Allakos
ALLK
| $62K | ﹤0.01% |
95,673
+95,172
| +18,996% | +$61.7K |
|
1221
Aquestive Therapeutics
AQST
$599M
| $62K | ﹤0.01% |
+12,540
| New | +$62K |
|
1222
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$248M
| $62K | ﹤0.01% |
2,222
-35,049
| -94% | -$978K |
|
|
JFIN
1223
Jiayin Group
JFIN
$574M
| $62K | ﹤0.01% |
9,024
+5,705
| +172% | +$39.2K |
|
1224
Vanguard Utilities ETF
VPU
$7.33B
| $62K | ﹤0.01% |
+360
| New | +$62K |
|
1225
Bruker
BRKR
$4.63B
| $61K | ﹤0.01% |
891
+418
| +88% | +$28.6K |
|