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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
326
SPDR S&P Metals & Mining ETF
XME
$2.33B
| $1M | ﹤0.01% |
+43,103
| New | +$1M |
|
327
Globus Medical
GMED
$7.98B
| $998K | ﹤0.01% |
20,157
+2,005
| +11% | +$99.3K |
|
328
Direxion Daily Technology Bull 3x Shares
TECL
$3.57B
| $978K | ﹤0.01% |
+32,000
| New | +$978K |
|
329
Magnachip Semiconductor
MX
$108M
| $977K | ﹤0.01% |
71,345
+62,112
| +673% | +$851K |
|
330
CF Industries
CF
$13.7B
| $973K | ﹤0.01% |
31,704
+23,600
| +291% | +$724K |
|
331
SS&C Technologies
SSNC
$21.7B
| $970K | ﹤0.01% |
+16,035
| New | +$970K |
|
|
SAVE
332
DELISTED
Spirit Airlines, Inc.
SAVE
| $964K | ﹤0.01% |
59,896
+59,696
| +29,848% | +$961K |
|
|
RDS.B
333
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $960K | ﹤0.01% |
+39,640
| New | +$960K |
|
334
STAAR Surgical
STAA
$1.37B
| $959K | ﹤0.01% |
16,960
+15,501
| +1,062% | +$877K |
|
335
Intuit
INTU
$187B
| $958K | ﹤0.01% |
2,939
+2,789
| +1,859% | +$909K |
|
336
Energy Select Sector SPDR Fund
XLE
$26.6B
| $948K | ﹤0.01% |
31,655
-280,172
| -90% | -$8.39M |
|
337
Albemarle
ALB
$8.54B
| $945K | ﹤0.01% |
+10,590
| New | +$945K |
|
338
Roundhill Sports Betting & iGaming ETF
BETZ
$85M
| $945K | ﹤0.01% |
44,067
+42,371
| +2,498% | +$909K |
|
|
QIWI
339
DELISTED
QIWI PLC
QIWI
| $945K | ﹤0.01% |
54,502
+31,093
| +133% | +$539K |
|
340
Welltower
WELL
$113B
| $943K | ﹤0.01% |
17,126
-17,155
| -50% | -$945K |
|
341
Dynatrace
DT
$15.3B
| $942K | ﹤0.01% |
22,982
+17,791
| +343% | +$729K |
|
342
Kimco Realty
KIM
$15.1B
| $937K | ﹤0.01% |
83,235
+63,010
| +312% | +$709K |
|
343
Revvity
RVTY
$9.87B
| $937K | ﹤0.01% |
+7,471
| New | +$937K |
|
344
iShares MSCI Japan ETF
EWJ
$15.7B
| $936K | ﹤0.01% |
15,851
-21,886
| -58% | -$1.29M |
|
345
America Movil
AMX
$59.6B
| $934K | ﹤0.01% |
74,829
-14,208
| -16% | -$177K |
|
346
Coeur Mining
CDE
$9.21B
| $930K | ﹤0.01% |
+126,104
| New | +$930K |
|
|
BIG
347
DELISTED
Big Lots, Inc.
BIG
| $930K | ﹤0.01% |
+20,862
| New | +$930K |
|
348
Insmed
INSM
$31.1B
| $925K | ﹤0.01% |
+28,785
| New | +$925K |
|
349
iShares Mortgage Real Estate ETF
REM
$618M
| $924K | ﹤0.01% |
35,882
+13,169
| +58% | +$339K |
|
|
MMP
350
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $919K | ﹤0.01% |
26,875
+13,843
| +106% | +$473K |
|