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 |
Apple
AAPL
|
$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$56.8M |
| 4 |
iShares Silver Trust
SLV
|
$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
$42.8M |
| 3 |
Verizon
VZ
|
$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.24% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
Wayfair
W
$11.6B
| $1.99M | ﹤0.01% |
18,000
+16,655
| +1,238% | +$1.85M |
|
302
Welltower
WELL
$112B
| $1.99M | ﹤0.01% |
20,701
+16,855
| +438% | +$1.62M |
|
303
Sibanye-Stillwater
SBSW
$6.08B
| $1.99M | ﹤0.01% |
122,568
+51,195
| +72% | +$831K |
|
304
Biogen
BIIB
$20.6B
| $1.97M | ﹤0.01% |
+9,350
| New | +$1.97M |
|
305
Huazhu Hotels Group
HTHT
$11.5B
| $1.95M | ﹤0.01% |
+59,185
| New | +$1.95M |
|
306
Amplify Transformational Data Sharing ETF
BLOK
$1.16B
| $1.95M | ﹤0.01% |
57,057
+32,348
| +131% | +$1.11M |
|
307
Bausch Health
BHC
$2.72B
| $1.95M | ﹤0.01% |
85,237
-82,441
| -49% | -$1.88M |
|
308
iShares MSCI Australia ETF
EWA
$1.53B
| $1.94M | ﹤0.01% |
+73,464
| New | +$1.94M |
|
309
Hertz
HTZ
$1.7B
| $1.92M | ﹤0.01% |
+86,734
| New | +$1.92M |
|
310
United Parks & Resorts
PRKS
$2.99B
| $1.92M | ﹤0.01% |
25,786
+22,386
| +658% | +$1.67M |
|
311
SSR Mining
SSRM
$4.28B
| $1.92M | ﹤0.01% |
88,213
+42,642
| +94% | +$927K |
|
312
Energy Fuels
UUUU
$2.67B
| $1.91M | ﹤0.01% |
208,584
+136,893
| +191% | +$1.25M |
|
313
Sonos
SONO
$1.78B
| $1.9M | ﹤0.01% |
67,480
-14,681
| -18% | -$414K |
|
314
nCino
NCNO
$3.52B
| $1.9M | ﹤0.01% |
46,334
+42,529
| +1,118% | +$1.74M |
|
315
Cenovus Energy
CVE
$28.7B
| $1.89M | ﹤0.01% |
+113,442
| New | +$1.89M |
|
316
Paycom
PAYC
$12.6B
| $1.89M | ﹤0.01% |
5,453
+2,686
| +97% | +$930K |
|
|
SAVE
317
DELISTED
Spirit Airlines, Inc.
SAVE
| $1.88M | ﹤0.01% |
85,873
+32,906
| +62% | +$720K |
|
318
Synchrony
SYF
$28.1B
| $1.86M | ﹤0.01% |
53,491
+3,727
| +7% | +$130K |
|
319
Walmart
WMT
$801B
| $1.85M | ﹤0.01% |
+37,338
| New | +$1.85M |
|
320
ProShares UltraPro Short QQQ
SQQQ
$2.32B
| $1.84M | ﹤0.01% |
+10,929
| New | +$1.84M |
|
321
ICICI Bank
IBN
$113B
| $1.83M | ﹤0.01% |
96,696
+85,334
| +751% | +$1.62M |
|
322
Amplify Alternative Harvest ETF
MJ
$183M
| $1.83M | ﹤0.01% |
14,687
-109
| -0.7% | -$13.6K |
|
323
First Majestic Silver
AG
$4.47B
| $1.81M | ﹤0.01% |
137,722
-28,030
| -17% | -$369K |
|
324
Suncor Energy
SU
$48.5B
| $1.79M | ﹤0.01% |
55,078
-60,350
| -52% | -$1.97M |
|
325
TechnipFMC
FTI
$16B
| $1.78M | ﹤0.01% |
230,221
+154,288
| +203% | +$1.2M |
|