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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1451
PUT
Alnylam Pharmaceuticals
ALNY
$36.3B
| $89K | 0.01% |
227
+155
| +215% | +$10.3K |
|
1452
CALL
Campbell Soup
CPB
$6.51B
| $89K | 0.01% |
206
-29
| -12% | -$1.7K |
|
1453
Norfolk Southern
NSC
$78.8B
| $89K | 0.01% |
1,070
-7,739
| -88% | -$585K |
|
1454
CALL
Pfizer
PFE
$140B
| $89K | 0.01% |
1,985
+559
| +39% | +$16K |
|
1455
Dr. Reddy's Laboratories
RDY
$9.82B
| $89K | 0.01% |
9,930
-2,595
| -21% | -$23.2K |
|
|
TGI
1456
DELISTED
Triumph Group
TGI
| $89K | 0.01% |
2,858
-16,974
| -86% | -$515K |
|
1457
PUT
Veracyte
VCYT
$4.52B
| $89K | 0.01% |
+1,536
| New | +$9.08K |
|
1458
CALL
Ventas
VTR
$48.9B
| $89K | 0.01% |
136
+87
| +178% | +$4.89K |
|
1459
Zoetis
ZTS
$31.6B
| $89K | 0.01% |
+2,017
| New | +$85.6K |
|
|
ECYT
1460
DELISTED
Endocyte, Inc. Common Stock
ECYT
| $89K | 0.01% |
28,822
+4,746
| +20% | +$15.5K |
|
|
ARIA
1461
PUT
DELISTED
Ariad Pharmaceuticals Inc
ARIA
| $89K | 0.01% |
536
+338
| +171% | +$1.89K |
|
|
SNDK
1462
DELISTED
SANDISK CORP
SNDK
| $89K | 0.01% |
+1,177
| New | +$84.9K |
|
1463
PUT
Acadia Pharmaceuticals
ACAD
$4.25B
| $88K | 0.01% |
1,315
+916
| +230% | +$20K |
|
|
BPT
1464
PUT
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $88K | 0.01% |
579
+528
| +1,035% | +$12.3K |
|
1465
CALL
Eastman Chemical
EMN
$7.8B
| $88K | 0.01% |
131
+20
| +18% | +$1.31K |
|
|
GES
1466
CALL
DELISTED
Guess Inc
GES
| $88K | 0.01% |
277
-6
| -2% | -$115 |
|
1467
CALL
Medtronic
MDT
$107B
| $88K | 0.01% |
825
-415
| -33% | -$31.3K |
|
|
NAV
1468
PUT
DELISTED
Navistar International
NAV
| $88K | 0.01% |
313
-43
| -12% | -$392 |
|
1469
CALL
Axos Financial
AX
$5.45B
| $87K | 0.01% |
365
-315
| -46% | -$5.71K |
|
1470
CALL
Digital Realty Trust
DLR
$73.7B
| $87K | 0.01% |
189
+125
| +195% | +$10.1K |
|
1471
PUT
Harmony Gold Mining
HMY
$9.92B
| $87K | 0.01% |
378
+364
| +2,600% | +$954 |
|
1472
CALL
Jacobs Solutions
J
$15.9B
| $87K | 0.01% |
378
+189
| +100% | +$6.17K |
|
1473
OneMain Financial
OMF
$6.9B
| $87K | 0.01% |
3,181
+2,807
| +751% | +$76K |
|
1474
PUT
Stanley Black & Decker
SWK
$14.2B
| $87K | 0.01% |
167
+26
| +18% | +$2.52K |
|
1475
ProShares Ultra Gold
UGL
$650M
| $87K | 0.01% |
8,860
-27,548
| -76% | -$255K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.