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
|
$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
$59.4M |
| 5 |
Intel
INTC
|
$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$56.8M |
| 2 |
iShares Silver Trust
SLV
|
$45.9M |
| 3 |
Ford
F
|
$32.5M |
| 4 |
Exxon Mobil
XOM
|
$20.4M |
| 5 |
Caterpillar
CAT
|
$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
251
Maximus
MMS
$4.97B
| $1.67M | ﹤0.01% |
+26,694
| New | +$1.67M |
|
252
Robinhood
HOOD
$90B
| $1.67M | ﹤0.01% |
+202,658
| New | +$1.67M |
|
253
ProShares UltraPro Short S&P 500
SPXU
$523M
| $1.65M | ﹤0.01% |
16,290
-4,688
| -22% | -$474K |
|
254
iShares MSCI ACWI ETF
ACWI
$22.1B
| $1.64M | ﹤0.01% |
19,548
+11,279
| +136% | +$946K |
|
255
TransDigm Group
TDG
$71.6B
| $1.63M | ﹤0.01% |
3,035
+2,405
| +382% | +$1.29M |
|
256
WIX.com
WIX
$8.52B
| $1.62M | ﹤0.01% |
24,770
-1,909
| -7% | -$125K |
|
257
Workday
WDAY
$61.7B
| $1.62M | ﹤0.01% |
11,613
-32,857
| -74% | -$4.58M |
|
|
CCEC
258
Capital Clean Energy Carriers Corp. Common Share
CCEC
$1.28B
| $1.62M | ﹤0.01% |
106,839
+93,385
| +694% | +$1.41M |
|
259
Algoma Steel
ASTL
$538M
| $1.58M | ﹤0.01% |
+176,362
| New | +$1.58M |
|
260
Boyd Gaming
BYD
$6.93B
| $1.55M | ﹤0.01% |
+31,183
| New | +$1.55M |
|
261
The Beauty Health Co
SKIN
$260M
| $1.54M | ﹤0.01% |
119,365
+118,906
| +25,905% | +$1.53M |
|
262
Amphenol
APH
$135B
| $1.51M | ﹤0.01% |
46,908
+30,518
| +186% | +$982K |
|
|
MMP
263
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $1.51M | ﹤0.01% |
31,578
-31,753
| -50% | -$1.52M |
|
264
SPDR Portfolio S&P 1500 Composite Stock Market ETF
SPTM
$11B
| $1.5M | ﹤0.01% |
32,197
-5,899
| -15% | -$274K |
|
|
VSTO
265
DELISTED
Vista Outdoor Inc.
VSTO
| $1.47M | ﹤0.01% |
52,854
-56,981
| -52% | -$1.59M |
|
266
Magnolia Oil & Gas
MGY
$4.38B
| $1.47M | ﹤0.01% |
69,859
+68,825
| +6,656% | +$1.44M |
|
267
Altimmune
ALT
$334M
| $1.47M | ﹤0.01% |
+125,262
| New | +$1.47M |
|
268
Invesco CurrencyShares Euro Currency Trust
FXE
$530M
| $1.46M | ﹤0.01% |
15,107
-36,740
| -71% | -$3.56M |
|
|
SNP
269
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $1.46M | ﹤0.01% |
32,647
+29,027
| +802% | +$1.3M |
|
270
On Holding
ONON
$14.9B
| $1.46M | ﹤0.01% |
82,589
+23,699
| +40% | +$419K |
|
271
iShares S&P GSCI Commodity-Indexed Trust
GSG
$1.03B
| $1.46M | ﹤0.01% |
63,109
+54,418
| +626% | +$1.26M |
|
272
iPath Bloomberg Commodity Index Total Return ETN due 12 June 2036
DJP
$581M
| $1.45M | ﹤0.01% |
41,585
-23,168
| -36% | -$806K |
|
273
Raymond James Financial
RJF
$33B
| $1.44M | ﹤0.01% |
+16,120
| New | +$1.44M |
|
274
Vanguard S&P 500 Growth ETF
VOOG
$19.3B
| $1.44M | ﹤0.01% |
+6,601
| New | +$1.44M |
|
275
Macy's
M
$4.64B
| $1.43M | ﹤0.01% |
78,134
+14,265
| +22% | +$261K |
|