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 | |
|---|---|---|---|---|---|---|
301
Ecolab
ECL
$74.7B
| $728K | 0.06% |
+6,533
| New | +$694K |
|
302
Alkermes
ALKS
$8.81B
| $726K | 0.06% |
+21,245
| New | +$839K |
|
303
PUT
iShares MSCI Australia ETF
EWA
$1.35B
| $725K | 0.06% |
6,073
+2,755
| +83% | +$49.6K |
|
|
CALD
304
DELISTED
Callidus Software, Inc.
CALD
| $725K | 0.06% |
43,506
+43,064
| +9,743% | +$638K |
|
|
TUP
305
DELISTED
Tupperware Brands Corporation
TUP
| $720K | 0.06% |
+12,421
| New | +$640K |
|
306
PUT
Energy Transfer Partners
ET
$70.3B
| $715K | 0.06% |
2,650
+91
| +4% | +$714 |
|
307
Royal Bank of Canada
RY
$294B
| $714K | 0.06% |
12,409
+5,055
| +69% | +$262K |
|
|
YHOO
308
PUT
DELISTED
Yahoo Inc
YHOO
| $713K | 0.06% |
2,507
+1,229
| +96% | +$38.5K |
|
309
CALL
Delta Air Lines
DAL
$55.2B
| $710K | 0.06% |
2,322
+436
| +23% | +$20.4K |
|
310
Direxion Daily Gold Miners Index Bull 2X ETF
NUGT
$893M
| $710K | 0.06% |
+3,033
| New | +$538K |
|
|
APC
311
PUT
DELISTED
Anadarko Petroleum
APC
| $710K | 0.06% |
1,680
+1,075
| +178% | +$43.6K |
|
|
FIT
312
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $707K | 0.06% |
46,719
+17,311
| +59% | +$275K |
|
|
P
313
DELISTED
Pandora Media Inc
P
| $706K | 0.06% |
78,911
-30,284
| -28% | -$297K |
|
314
PUT
Deere & Co
DE
$164B
| $705K | 0.06% |
3,027
+515
| +21% | +$40.3K |
|
315
Methanex
MEOH
$4.37B
| $705K | 0.06% |
+21,961
| New | +$653K |
|
316
Transocean
RIG
$5.85B
| $699K | 0.06% |
+76,479
| New | +$760K |
|
317
Applied Materials
AMAT
$445B
| $697K | 0.06% |
32,932
+10,371
| +46% | +$189K |
|
318
FirstEnergy
FE
$28.5B
| $696K | 0.06% |
+19,366
| New | +$651K |
|
|
SGI
319
Somnigroup International
SGI
$14.7B
| $695K | 0.06% |
+45,756
| New | +$678K |
|
|
CBPO
320
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $695K | 0.06% |
6,071
+3,626
| +148% | +$425K |
|
|
ETP
321
DELISTED
Energy Transfer Partners L.p.
ETP
| $693K | 0.06% |
21,441
-33,710
| -61% | -$939K |
|
322
GSK
GSK
$102B
| $688K | 0.05% |
13,580
-3,160
| -19% | -$157K |
|
323
LPL Financial
LPLA
$26.3B
| $688K | 0.05% |
+27,744
| New | +$749K |
|
324
Quad
QUAD
$440M
| $688K | 0.05% |
+53,177
| New | +$575K |
|
|
LNKD
325
CALL
DELISTED
LinkedIn Corporation
LNKD
| $687K | 0.05% |
3,000
+1,893
| +171% | +$278K |
|
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.