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 | |
|---|---|---|---|---|---|---|
251
Cleveland-Cliffs
CLF
$5.63B
| $2.3M | ﹤0.01% |
+180,336
| New | +$2.3M |
|
252
Nasdaq
NDAQ
$53.6B
| $2.27M | ﹤0.01% |
31,032
-94
| -0.3% | -$6.86K |
|
253
Cisco
CSCO
$264B
| $2.25M | ﹤0.01% |
42,222
-466,362
| -92% | -$24.8M |
|
254
AdvisorShares Pure US Cannabis ETF
MSOS
$837M
| $2.25M | ﹤0.01% |
313,486
+34,125
| +12% | +$245K |
|
|
BERY
255
DELISTED
Berry Global Group, Inc.
BERY
| $2.2M | ﹤0.01% |
35,228
+17,582
| +100% | +$1.1M |
|
256
DocuSign
DOCU
$16.1B
| $2.2M | ﹤0.01% |
35,412
+32,189
| +999% | +$2M |
|
257
Apellis Pharmaceuticals
APLS
$3.55B
| $2.13M | ﹤0.01% |
73,982
+3,910
| +6% | +$113K |
|
258
Hecla Mining
HL
$6.04B
| $2.12M | ﹤0.01% |
318,238
-14,475
| -4% | -$96.5K |
|
259
Lantheus
LNTH
$3.72B
| $2.12M | ﹤0.01% |
19,292
+15,414
| +397% | +$1.69M |
|
260
Dollar Tree
DLTR
$20.6B
| $2.12M | ﹤0.01% |
30,079
+28,734
| +2,136% | +$2.02M |
|
261
The Communication Services Select Sector SPDR Fund
XLC
$25.8B
| $2.11M | ﹤0.01% |
23,393
+12,185
| +109% | +$1.1M |
|
262
Rapid7
RPD
$1.32B
| $2.1M | ﹤0.01% |
52,720
+11,806
| +29% | +$471K |
|
263
Signet Jewelers
SIG
$3.85B
| $2.1M | ﹤0.01% |
+20,313
| New | +$2.1M |
|
264
Sunrun
RUN
$4.19B
| $2.08M | ﹤0.01% |
115,334
-99,740
| -46% | -$1.8M |
|
265
Ferguson
FERG
$47.8B
| $2.07M | ﹤0.01% |
+10,405
| New | +$2.07M |
|
266
Aptiv
APTV
$17.5B
| $2.06M | ﹤0.01% |
28,659
+21,556
| +303% | +$1.55M |
|
267
Western Digital
WDC
$31.9B
| $2.06M | ﹤0.01% |
39,878
+2,285
| +6% | +$118K |
|
268
Annaly Capital Management
NLY
$14.2B
| $2.05M | ﹤0.01% |
102,034
+13,744
| +16% | +$276K |
|
269
AppFolio
APPF
$10.2B
| $2.03M | ﹤0.01% |
8,614
+6,797
| +374% | +$1.6M |
|
270
Hawaiian Electric Industries
HE
$2.12B
| $2.03M | ﹤0.01% |
+209,214
| New | +$2.03M |
|
271
Suncor Energy
SU
$48.5B
| $2.02M | ﹤0.01% |
+54,702
| New | +$2.02M |
|
272
Costco
COST
$427B
| $2M | ﹤0.01% |
+2,260
| New | +$2M |
|
|
SA
273
Seabridge Gold
SA
$1.81B
| $2M | ﹤0.01% |
119,276
+22,085
| +23% | +$371K |
|
274
Toyota
TM
$260B
| $1.98M | ﹤0.01% |
11,116
+10,204
| +1,119% | +$1.82M |
|
275
Lumen
LUMN
$4.87B
| $1.98M | ﹤0.01% |
279,002
+71,836
| +35% | +$510K |
|