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 | |
|---|---|---|---|---|---|---|
|
MDP
1476
DELISTED
Meredith Corporation
MDP
| $87K | 0.01% |
1,834
+1,485
| +426% | +$63K |
|
|
GLUU
1477
DELISTED
Glu Mobile Inc.
GLUU
| $87K | 0.01% |
31,166
+15,862
| +104% | +$45.4K |
|
|
ANDV
1478
PUT
DELISTED
Andeavor
ANDV
| $87K | 0.01% |
278
-453
| -62% | -$38.9K |
|
|
NSR
1479
PUT
DELISTED
Neustar Inc
NSR
| $87K | 0.01% |
250
+201
| +410% | +$4.81K |
|
1480
CALL
Estee Lauder
EL
$29B
| $86K | 0.01% |
177
+160
| +941% | +$14.3K |
|
1481
GATX Corp
GATX
$6.55B
| $86K | 0.01% |
1,826
-2,543
| -58% | -$108K |
|
1482
PUT
Corning
GLW
$126B
| $86K | 0.01% |
266
+31
| +13% | +$575 |
|
1483
CALL
Gray Television
GTN
$407M
| $86K | 0.01% |
519
+445
| +601% | +$5.48K |
|
1484
Sony
SONY
$123B
| $86K | 0.01% |
16,910
-830
| -5% | -$3.81K |
|
1485
CALL
World Acceptance Corp
WRLD
$950M
| $86K | 0.01% |
177
+80
| +82% | +$2.82K |
|
|
CTXS
1486
CALL
DELISTED
Citrix Systems Inc
CTXS
| $86K | 0.01% |
191
-177
| -48% | -$10K |
|
|
MB
1487
DELISTED
MINDBODY, Inc. Class A Common Stock
MB
| $86K | 0.01% |
+6,495
| New | +$81.7K |
|
1488
FerroAtlántica
GSM
$628M
| $85K | 0.01% |
9,693
+6,920
| +250% | +$59.7K |
|
|
KG
1489
Kestrel Group
KG
$71.3M
| $85K | 0.01% |
+330
| New | +$85.7K |
|
1490
Oceaneering
OII
$5.26B
| $85K | 0.01% |
+2,582
| New | +$80.4K |
|
1491
PUT
Vanguard FTSE Europe ETF
VGK
$30B
| $85K | 0.01% |
1,044
+813
| +352% | +$38K |
|
1492
Energous
WATT
$80.3M
| $85K | 0.01% |
14
+12
| +600% | +$49.5K |
|
|
GAP
1493
CALL
The Gap Inc
GAP
$6.84B
| $85K | 0.01% |
534
+267
| +100% | +$7.01K |
|
|
NS
1494
PUT
DELISTED
NuStar Energy L.P.
NS
| $85K | 0.01% |
225
+50
| +29% | +$1.74K |
|
|
ENOC
1495
DELISTED
EnerNOC, Inc.
ENOC
| $85K | 0.01% |
11,445
+7,043
| +160% | +$38.9K |
|
|
MJN
1496
PUT
DELISTED
Mead Johnson Nutrition Company
MJN
| $85K | 0.01% |
1,566
+1,031
| +193% | +$76.7K |
|
|
SIVB
1497
PUT
DELISTED
SVB Financial Group
SIVB
| $85K | 0.01% |
430
+337
| +362% | +$32.6K |
|
1498
Builders FirstSource
BLDR
$7.84B
| $84K | 0.01% |
+7,496
| New | +$64.9K |
|
1499
PUT
Casey's General Stores
CASY
$31.9B
| $84K | 0.01% |
64
+39
| +156% | +$4.37K |
|
1500
CALL
Chubb
CB
$140B
| $84K | 0.01% |
290
-120
| -29% | -$13.8K |
|
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.