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 | |
|---|---|---|---|---|---|---|
|
VIAB
151
DELISTED
Viacom Inc. Class B
VIAB
| $1.54M | 0.12% |
37,354
-11,663
| -24% | -$463K |
|
152
CALL
Nike
NKE
$63.7B
| $1.54M | 0.12% |
3,822
+1,255
| +49% | +$75.8K |
|
153
CALL
Wynn Resorts
WYNN
$9.82B
| $1.52M | 0.12% |
2,380
+860
| +57% | +$63.5K |
|
154
Cummins
CMI
$91.1B
| $1.5M | 0.12% |
13,696
-4,158
| -23% | -$402K |
|
|
YHOO
155
CALL
DELISTED
Yahoo Inc
YHOO
| $1.5M | 0.12% |
4,629
+792
| +21% | +$24.8K |
|
156
Gilead Sciences
GILD
$162B
| $1.5M | 0.12% |
16,278
-74,563
| -82% | -$6.72M |
|
157
BP
BP
$110B
| $1.49M | 0.12% |
58,625
+24,329
| +71% | +$614K |
|
158
ProShares Ultra Real Estate
URE
$58.4M
| $1.47M | 0.12% |
25,952
+15,870
| +157% | +$772K |
|
159
Procter & Gamble
PG
$345B
| $1.46M | 0.12% |
+17,775
| New | +$1.43M |
|
|
160
CALL
Chipotle Mexican Grill
CMG
$42.7B
| $1.46M | 0.12% |
75,250
+27,050
| +56% | +$257K |
|
161
Direxion Daily Financial Bear 3x ETF
FAZ
$88.6M
| $1.46M | 0.12% |
+86
| New | +$1.75M |
|
162
CALL
GE Aerospace
GE
$353B
| $1.45M | 0.12% |
1,356
+850
| +168% | +$120K |
|
163
CALL
Home Depot
HD
$331B
| $1.44M | 0.11% |
2,026
+633
| +45% | +$78.9K |
|
164
PUT
Qualcomm
QCOM
$183B
| $1.43M | 0.11% |
1,943
-1,696
| -47% | -$82.7K |
|
165
lululemon athletica
LULU
$13.2B
| $1.42M | 0.11% |
20,976
+2,312
| +12% | +$139K |
|
166
CALL
CVS Health
CVS
$141B
| $1.42M | 0.11% |
2,604
+620
| +31% | +$60.3K |
|
167
CALL
United Parcel Service
UPS
$98.9B
| $1.39M | 0.11% |
4,041
+2,685
| +198% | +$261K |
|
|
TIF
168
DELISTED
Tiffany & Co.
TIF
| $1.39M | 0.11% |
18,942
+1,540
| +9% | +$103K |
|
169
Ulta Beauty
ULTA
$21B
| $1.38M | 0.11% |
7,110
-905
| -11% | -$158K |
|
|
WBMD
170
DELISTED
WebMD Health Corp.
WBMD
| $1.35M | 0.11% |
21,590
+21,249
| +6,231% | +$1.14M |
|
171
Direxion Daily Energy Bull 2X ETF
ERX
$240M
| $1.34M | 0.11% |
5,696
+1,428
| +33% | +$283K |
|
|
WWAV
172
DELISTED
The WhiteWave Foods Company
WWAV
| $1.33M | 0.11% |
+32,628
| New | +$1.24M |
|
173
PUT
Amgen
AMGN
$198B
| $1.31M | 0.1% |
2,330
+696
| +43% | +$103K |
|
|
UWC
174
CALL
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $1.31M | 0.1% |
1,388
+679
| +96% | +$641K |
|
175
CALL
McDonald's
MCD
$188B
| $1.31M | 0.1% |
1,801
+125
| +7% | +$14.9K |
|
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.