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 | |
|---|---|---|---|---|---|---|
|
CLR
1351
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $58K | ﹤0.01% |
+900
| New | +$58K |
|
1352
Atara Biotherapeutics
ATRA
$85.1M
| $57K | ﹤0.01% |
293
-739
| -72% | -$144K |
|
1353
Capricor Therapeutics
CAPR
$291M
| $57K | ﹤0.01% |
16,601
+9,080
| +121% | +$31.2K |
|
1354
Copa Holdings
CPA
$4.86B
| $57K | ﹤0.01% |
912
+615
| +207% | +$38.4K |
|
1355
NeoGenomics
NEO
$1.03B
| $57K | ﹤0.01% |
6,995
-15,446
| -69% | -$126K |
|
1356
Pultegroup
PHM
$27B
| $57K | ﹤0.01% |
1,444
-4,205
| -74% | -$166K |
|
1357
SPDR Bloomberg Short Term High Yield Bond ETF
SJNK
$4.87B
| $57K | ﹤0.01% |
+2,369
| New | +$57K |
|
1358
Upwork
UPWK
$2.24B
| $57K | ﹤0.01% |
+2,800
| New | +$57K |
|
|
WEJO
1359
DELISTED
Wejo Group Limited Common Shares
WEJO
| $57K | ﹤0.01% |
48,283
+42,758
| +774% | +$50.5K |
|
|
MANT
1360
DELISTED
Mantech International Corp
MANT
| $57K | ﹤0.01% |
+602
| New | +$57K |
|
|
AFMD
1361
DELISTED
Affimed
AFMD
| $56K | ﹤0.01% |
+2,023
| New | +$56K |
|
1362
Broadridge
BR
$29.5B
| $56K | ﹤0.01% |
393
-112
| -22% | -$16K |
|
1363
Lindblad Expeditions
LIND
$735M
| $56K | ﹤0.01% |
+6,977
| New | +$56K |
|
1364
NextDecade
NEXT
$1.79B
| $56K | ﹤0.01% |
12,737
-5,455
| -30% | -$24K |
|
1365
New Fortress Energy
NFE
$373M
| $56K | ﹤0.01% |
+1,438
| New | +$56K |
|
1366
Splash Beverage Group
SBEV
$3.69M
| $56K | ﹤0.01% |
+471
| New | +$56K |
|
1367
TFI International
TFII
$7.77B
| $56K | ﹤0.01% |
706
-2,872
| -80% | -$228K |
|
1368
Kartoon Studios
TOON
$37.8M
| $56K | ﹤0.01% |
7,490
+3,869
| +107% | +$28.9K |
|
1369
Wolverine World Wide
WWW
$2.48B
| $56K | ﹤0.01% |
2,779
+2,744
| +7,840% | +$55.3K |
|
1370
Accel Entertainment
ACEL
$938M
| $55K | ﹤0.01% |
5,195
+1,627
| +46% | +$17.2K |
|
1371
Cadiz
CDZI
$322M
| $55K | ﹤0.01% |
23,622
-2,669
| -10% | -$6.21K |
|
1372
Columbus McKinnon
CMCO
$415M
| $55K | ﹤0.01% |
1,960
+1,651
| +534% | +$46.3K |
|
1373
INmune Bio
INMB
$53.4M
| $55K | ﹤0.01% |
6,292
-16,823
| -73% | -$147K |
|
1374
Nektar Therapeutics
NKTR
$926M
| $55K | ﹤0.01% |
980
-280
| -22% | -$15.7K |
|
1375
Orion Group Holdings
ORN
$299M
| $55K | ﹤0.01% |
24,379
-5,198
| -18% | -$11.7K |
|