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 | |
|---|---|---|---|---|---|---|
326
Realty Income
O
$54.2B
| $1.18M | ﹤0.01% |
+17,302
| New | +$1.18M |
|
327
Direxion Daily CSI China Internet Index Bull 2X Shares
CWEB
$323M
| $1.18M | ﹤0.01% |
16,178
-1,312
| -8% | -$95.3K |
|
328
Hologic
HOLX
$14.8B
| $1.17M | ﹤0.01% |
16,920
+9,613
| +132% | +$666K |
|
329
MGM Resorts International
MGM
$9.98B
| $1.17M | ﹤0.01% |
40,415
-14,951
| -27% | -$433K |
|
330
United Microelectronic
UMC
$17.1B
| $1.17M | ﹤0.01% |
172,633
+7,730
| +5% | +$52.3K |
|
331
ProShares VIX Short-Term Futures ETF
VIXY
$85.2M
| $1.16M | ﹤0.01% |
3,179
+2,815
| +773% | +$1.03M |
|
332
Alamos Gold
AGI
$13.5B
| $1.15M | ﹤0.01% |
163,793
+68,894
| +73% | +$483K |
|
333
Plains All American Pipeline
PAA
$12.1B
| $1.14M | ﹤0.01% |
116,304
+99,188
| +580% | +$974K |
|
334
ProShares Trust UltraShort Lehman 7-10 Year Treasury
PST
$13.2M
| $1.14M | ﹤0.01% |
57,800
+3,564
| +7% | +$70.4K |
|
335
Bunge Global
BG
$16.9B
| $1.14M | ﹤0.01% |
12,522
-11,061
| -47% | -$1M |
|
336
Haemonetics
HAE
$2.62B
| $1.13M | ﹤0.01% |
17,397
+16,607
| +2,102% | +$1.08M |
|
337
Eastman Chemical
EMN
$7.93B
| $1.12M | ﹤0.01% |
+12,530
| New | +$1.12M |
|
338
First Trust NASDAQ Cybersecurity ETF
CIBR
$10.6B
| $1.12M | ﹤0.01% |
27,903
-28,626
| -51% | -$1.15M |
|
339
Direxion Daily Financial Bear 3x Shares
FAZ
$108M
| $1.12M | ﹤0.01% |
+38,584
| New | +$1.12M |
|
|
NNDM
340
Nano Dimension
NNDM
$293M
| $1.09M | ﹤0.01% |
348,670
-67,910
| -16% | -$213K |
|
341
Transocean
RIG
$2.9B
| $1.09M | ﹤0.01% |
327,673
-444,464
| -58% | -$1.48M |
|
|
NSTG
342
DELISTED
NanoString Technologies, Inc.
NSTG
| $1.09M | ﹤0.01% |
85,794
+84,881
| +9,297% | +$1.08M |
|
343
Appian
APPN
$2.26B
| $1.07M | ﹤0.01% |
22,685
+21,985
| +3,141% | +$1.04M |
|
344
Trump Media & Technology Group
DJT
$4.67B
| $1.06M | ﹤0.01% |
43,879
+32,309
| +279% | +$781K |
|
345
Becton Dickinson
BDX
$55.1B
| $1.06M | ﹤0.01% |
+4,295
| New | +$1.06M |
|
346
Global X Silver Miners ETF NEW
SIL
$2.92B
| $1.06M | ﹤0.01% |
40,852
-16,907
| -29% | -$438K |
|
347
Entegris
ENTG
$12.4B
| $1.06M | ﹤0.01% |
+11,456
| New | +$1.06M |
|
348
Viatris
VTRS
$12.2B
| $1.05M | ﹤0.01% |
100,485
-228,260
| -69% | -$2.39M |
|
349
Toast
TOST
$24B
| $1.05M | ﹤0.01% |
81,086
+48,373
| +148% | +$626K |
|
350
Vanguard Short-Term Inflation-Protected Securities Index Fund
VTIP
$15.7B
| $1.04M | ﹤0.01% |
20,777
-21,741
| -51% | -$1.09M |
|