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
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1276
Perdoceo Education
PRDO
$2.26B
| $21K | ﹤0.01% |
+2,111
| New | +$21K |
|
1277
ProShares Ultra Technology
ROM
$813M
| $21K | ﹤0.01% |
+2,344
| New | +$21K |
|
1278
Tennant Co
TNC
$1.52B
| $21K | ﹤0.01% |
+328
| New | +$21K |
|
|
TWO
1279
Two Harbors Investment
TWO
$1.05B
| $21K | ﹤0.01% |
+269
| New | +$21K |
|
|
MANT
1280
DELISTED
Mantech International Corp
MANT
| $21K | ﹤0.01% |
491
+215
| +78% | +$9.2K |
|
|
SNR
1281
DELISTED
NEW SENIOR INVESTMENT GROUP INC.
SNR
| $21K | ﹤0.01% |
+2,399
| New | +$21K |
|
|
ATW
1282
DELISTED
Atwood Oceanics
ATW
| $21K | ﹤0.01% |
+2,248
| New | +$21K |
|
1283
Barnes & Noble Education
BNED
$284M
| $20K | ﹤0.01% |
32
-28
| -47% | -$17.5K |
|
1284
CEVA Inc
CEVA
$563M
| $20K | ﹤0.01% |
479
-5,288
| -92% | -$221K |
|
1285
Cullen/Frost Bankers
CFR
$8.16B
| $20K | ﹤0.01% |
+215
| New | +$20K |
|
1286
Compass Minerals
CMP
$762M
| $20K | ﹤0.01% |
+317
| New | +$20K |
|
1287
MidCap Financial Investment
MFIC
$1.17B
| $20K | ﹤0.01% |
1,144
-615
| -35% | -$10.8K |
|
1288
Valvoline
VVV
$5.14B
| $20K | ﹤0.01% |
874
-2,246
| -72% | -$51.4K |
|
1289
American Coastal Insurance
ACIC
$534M
| $19K | ﹤0.01% |
+1,211
| New | +$19K |
|
|
ASA
1290
ASA Gold and Precious Metals
ASA
$772M
| $19K | ﹤0.01% |
1,665
-669
| -29% | -$7.63K |
|
1291
AptarGroup
ATR
$9B
| $19K | ﹤0.01% |
223
+73
| +49% | +$6.22K |
|
1292
DHI Group
DHX
$141M
| $19K | ﹤0.01% |
7,534
+5,937
| +372% | +$15K |
|
1293
iShares MSCI Italy ETF
EWI
$727M
| $19K | ﹤0.01% |
617
-2,999
| -83% | -$92.4K |
|
1294
FNB Corp
FNB
$5.88B
| $19K | ﹤0.01% |
1,387
+1,095
| +375% | +$15K |
|
1295
Potbelly
PBPB
$515M
| $19K | ﹤0.01% |
1,563
-31,512
| -95% | -$383K |
|
1296
REV Group
REVG
$3.07B
| $19K | ﹤0.01% |
+674
| New | +$19K |
|
1297
Sasol
SSL
$4.54B
| $19K | ﹤0.01% |
692
-2
| -0.3% | -$55 |
|
|
NDRO
1298
DELISTED
Enduro Royalty Trust
NDRO
| $19K | ﹤0.01% |
+4,454
| New | +$19K |
|
1299
Bankunited
BKU
$2.93B
| $18K | ﹤0.01% |
+533
| New | +$18K |
|
1300
Chegg
CHGG
$173M
| $18K | ﹤0.01% |
1,219
-4,242
| -78% | -$62.6K |
|