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 | |
|---|---|---|---|---|---|---|
3151
PUT
Public Storage
PSA
$60.5B
| $14K | ﹤0.01% |
241
+156
| +184% | +$39.4K |
|
3152
CALL
uniQure
QURE
$2.63B
| $14K | ﹤0.01% |
170
+16
| +10% | +$236 |
|
3153
CALL
Rogers Communications
RCI
$17.7B
| $14K | ﹤0.01% |
+144
| New | +$5.21K |
|
3154
Sunrun
RUN
$2.38B
| $14K | ﹤0.01% |
+2,191
| New | +$15.7K |
|
3155
PUT
Banco Santander
SAN
$200B
| $14K | ﹤0.01% |
46
-175
| -79% | -$719 |
|
|
SAND
3156
PUT
DELISTED
Sandstorm Gold
SAND
| $14K | ﹤0.01% |
367
+350
| +2,059% | +$963 |
|
3157
CALL
Sherwin-Williams
SHW
$80.7B
| $14K | ﹤0.01% |
147
+51
| +53% | +$4.46K |
|
3158
CALL
TD Synnex
SNX
$19.6B
| $14K | ﹤0.01% |
+22
| New | +$982 |
|
3159
PUT
Stellantis
STLA
$16.5B
| $14K | ﹤0.01% |
196
-281
| -59% | -$2.03K |
|
3160
CALL
TransDigm Group
TDG
$71.9B
| $14K | ﹤0.01% |
14
+5
| +56% | +$1.09K |
|
3161
Gentherm
THRM
$1.29B
| $14K | ﹤0.01% |
355
-531
| -60% | -$21.5K |
|
3162
PUT
TJX Companies
TJX
$173B
| $14K | ﹤0.01% |
194
-252
| -57% | -$9.15K |
|
3163
PUT
Talphera
TLPH
$65.4M
| $14K | ﹤0.01% |
4
+1
| +33% | +$69 |
|
3164
CALL
Tyler Technologies
TYL
$13B
| $14K | ﹤0.01% |
66
-36
| -35% | -$5K |
|
3165
CALL
CVR Partners
UAN
$1.27B
| $14K | ﹤0.01% |
+11
| New | +$727 |
|
3166
CALL
Urban Outfitters
URBN
$6.22B
| $14K | ﹤0.01% |
41
-57
| -58% | -$1.51K |
|
3167
CALL
United Therapeutics
UTHR
$26.3B
| $14K | ﹤0.01% |
120
+93
| +344% | +$11.8K |
|
3168
PUT
Vuzix
VUZI
$193M
| $14K | ﹤0.01% |
175
+170
| +3,400% | +$962 |
|
3169
CALL
World Kinect Corp
WKC
$2.04B
| $14K | ﹤0.01% |
+76
| New | +$3.26K |
|
|
SAVE
3170
PUT
DELISTED
Spirit Airlines, Inc.
SAVE
| $14K | ﹤0.01% |
52
+4
| +8% | +$179 |
|
|
WRK
3171
PUT
DELISTED
WestRock Company
WRK
| $14K | ﹤0.01% |
405
+383
| +1,741% | +$12.5K |
|
|
RFP
3172
DELISTED
Resolute Forest Products Inc.
RFP
| $14K | ﹤0.01% |
2,655
+2,098
| +377% | +$11.4K |
|
|
PBFX
3173
PUT
DELISTED
PBF LOGISTICS LP
PBFX
| $14K | ﹤0.01% |
131
-20
| -13% | -$371 |
|
|
ANH
3174
DELISTED
Anworth Mortgage Asset Corporation
ANH
| $14K | ﹤0.01% |
3,203
+1,330
| +71% | +$5.95K |
|
|
CZZ
3175
DELISTED
Cosan Limited
CZZ
| $14K | ﹤0.01% |
3,011
-3,781
| -56% | -$13.2K |
|
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.