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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1476
CALL
Stellantis
STLA
$16.5B
| $139K | 0.01% |
1,106
-1,028
| -48% | -$11.1K |
|
1477
PUT
Thomson Reuters
TRI
$39.4B
| $139K | 0.01% |
+165
| New | +$8.43K |
|
|
OSIR
1478
PUT
DELISTED
Osiris Therapeutics, Inc. Common Stock
OSIR
| $139K | 0.01% |
557
+57
| +11% | +$309 |
|
1479
CALL
Acadia Pharmaceuticals
ACAD
$4.25B
| $138K | 0.01% |
905
-234
| -21% | -$8.26K |
|
1480
CALL
Bread Financial
BFH
$4.21B
| $138K | 0.01% |
144
-54
| -27% | -$10.2K |
|
1481
PUT
CBRE Group
CBRE
$40.8B
| $138K | 0.01% |
+226
| New | +$7.56K |
|
1482
PUT
Fossil Group
FOSL
$239M
| $138K | 0.01% |
463
+274
| +145% | +$5.81K |
|
1483
CALL
Hershey
HSY
$35.4B
| $138K | 0.01% |
326
+47
| +17% | +$5.04K |
|
1484
PUT
Lincoln National
LNC
$7.91B
| $138K | 0.01% |
650
+155
| +31% | +$10.6K |
|
1485
Shake Shack
SHAK
$2.3B
| $138K | 0.01% |
4,149
+2,508
| +153% | +$86.7K |
|
|
LSI
1486
PUT
DELISTED
Life Storage, Inc.
LSI
| $138K | 0.01% |
902
+606
| +205% | +$33.9K |
|
|
STRP
1487
PUT
DELISTED
Straight Path Communications Inc.
STRP
| $138K | 0.01% |
401
+207
| +107% | +$7.18K |
|
|
AF
1488
CALL
DELISTED
Astoria Financial Corporation
AF
| $138K | 0.01% |
479
-146
| -23% | -$2.82K |
|
1489
CALL
Kroger
KR
$34.8B
| $137K | 0.01% |
1,710
-7
| -0.4% | -$224 |
|
|
GOLD
1490
PUT
DELISTED
Randgold Resources Ltd
GOLD
| $137K | 0.01% |
308
-125
| -29% | -$10.9K |
|
1491
CALL
Cummins
CMI
$91.7B
| $136K | 0.01% |
275
-325
| -54% | -$48.1K |
|
1492
CALL
JetBlue
JBLU
$1.96B
| $136K | 0.01% |
1,032
-251
| -20% | -$5.12K |
|
1493
CALL
Macy's
M
$6.15B
| $136K | 0.01% |
1,378
-331
| -19% | -$10.2K |
|
1494
PUT
Yelp
YELP
$1.38B
| $136K | 0.01% |
367
+59
| +19% | +$2.19K |
|
|
ALXN
1495
PUT
DELISTED
Alexion Pharmaceuticals
ALXN
| $136K | 0.01% |
271
-449
| -62% | -$57.9K |
|
|
YHOO
1496
PUT
DELISTED
Yahoo Inc
YHOO
| $136K | 0.01% |
2,115
-685
| -24% | -$30.6K |
|
1497
PUT
Akamai
AKAM
$16.8B
| $135K | 0.01% |
608
+194
| +47% | +$12.7K |
|
|
NAK
1498
Northern Dynasty Minerals
NAK
$885M
| $135K | 0.01% |
94,965
+18,421
| +24% | +$37.8K |
|
1499
PUT
Rio Tinto
RIO
$148B
| $135K | 0.01% |
484
-270
| -36% | -$11.5K |
|
|
EVHC
1500
DELISTED
Envision Healthcare Holdings Inc
EVHC
| $135K | 0.01% |
2,215
-1,594
| -42% | -$107K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.