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 |
Apple
AAPL
|
+$34.8M |
| 2 |
Bausch Health
BHC
|
+$20.3M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$18.9M |
| 4 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$12.3M |
| 5 |
Amazon
AMZN
|
+$12.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.8M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 9.5% |
| 2 | Healthcare | 7.55% |
| 3 | Technology | 7.01% |
| 4 | Communication Services | 6.66% |
| 5 | Industrials | 5.76% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1401
Greif
GEF
$4.47B
| $95K | 0.01% |
3,113
-520
| -14% | -$17.2K |
|
1402
CALL
Perrigo
PRGO
$1.4B
| $95K | 0.01% |
733
+158
| +27% | +$24.3K |
|
|
INFO
1403
DELISTED
IHS Markit Ltd. Common Shares
INFO
| $95K | 0.01% |
3,178
-333
| -9% | -$9.89K |
|
|
TERP
1404
CALL
DELISTED
TerraForm Power, Inc
TERP
| $95K | 0.01% |
450
+315
| +233% | +$4.49K |
|
1405
Delek Logistics
DKL
$3.04B
| $94K | 0.01% |
2,635
-1,764
| -40% | -$58K |
|
1406
PUT
Kennametal
KMT
$2.68B
| $94K | 0.01% |
166
-79
| -32% | -$2.04K |
|
1407
PUT
iShares Silver Trust
SLV
$28.1B
| $94K | 0.01% |
1,005
+569
| +131% | +$8.02K |
|
|
ENDP
1408
CALL
DELISTED
Endo International plc
ENDP
| $94K | 0.01% |
442
+108
| +32% | +$6.56K |
|
|
GES
1409
CALL
DELISTED
Guess Inc
GES
| $93K | 0.01% |
283
+44
| +18% | +$904 |
|
1410
Jabil
JBL
$32.8B
| $93K | 0.01% |
+3,994
| New | +$95K |
|
1411
Pitney Bowes
PBI
$2.42B
| $93K | 0.01% |
4,539
-1,726
| -28% | -$35.7K |
|
1412
PUT
World Acceptance Corp
WRLD
$950M
| $93K | 0.01% |
262
+152
| +138% | +$5.63K |
|
|
STRP
1413
PUT
DELISTED
Straight Path Communications Inc.
STRP
| $93K | 0.01% |
244
+68
| +39% | +$1.6K |
|
|
MYCC
1414
DELISTED
ClubCorp Holdings, Inc.
MYCC
| $93K | 0.01% |
+5,112
| New | +$98.6K |
|
|
CIE
1415
PUT
DELISTED
Cobalt International Energy, Inc
CIE
| $93K | 0.01% |
28
+12
| +75% | +$1.32K |
|
|
UFS
1416
DELISTED
DOMTAR CORPORATION (New)
UFS
| $93K | 0.01% |
2,523
+2,186
| +649% | +$86.6K |
|
|
ANAC
1417
PUT
DELISTED
ANACOR PHARMACEUTICALS INC COM
ANAC
| $93K | 0.01% |
165
+143
| +650% | +$15.8K |
|
1418
PUT
Blackrock
BLK
$164B
| $92K | 0.01% |
368
+136
| +59% | +$46.2K |
|
1419
Blackbaud
BLKB
$1.5B
| $92K | 0.01% |
1,405
+522
| +59% | +$32.6K |
|
1420
PUT
Diageo
DEO
$46.2B
| $92K | 0.01% |
202
-18
| -8% | -$2.03K |
|
1421
Integer Holdings
ITGR
$3.35B
| $92K | 0.01% |
1,938
-1,745
| -47% | -$87.2K |
|
1422
CALL
Masco
MAS
$16B
| $92K | 0.01% |
246
+30
| +14% | +$854 |
|
1423
PUT
Phillips 66
PSX
$82.9B
| $92K | 0.01% |
625
+229
| +58% | +$19.8K |
|
|
SF
1424
Stifel
SF
$12.3B
| $92K | 0.01% |
4,887
+1,690
| +53% | +$32.9K |
|
1425
Tractor Supply
TSCO
$16.3B
| $92K | 0.01% |
+5,405
| New | +$95.7K |
|
Similar funds
Simplex Trading's Q4 2015 Portfolio in Review
As of Q4 2015, Simplex Trading held 7,008 positions worth $1.28B, down 6.4% from $1.36B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading's Q4 2015 filing shows 1,417 new, 1,993 increased, 1,803 reduced and 1,598 closed positions. Its largest new stake was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M. The largest sale was iShares Russell 2000 ETF, an estimated $27.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 9.5% of assets, up from 4.6% a quarter earlier, followed by Healthcare and Technology.
- Simplex Trading's largest Q4 2015 buy was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M.
- Simplex Trading added most to Apple in Q4 2015, an estimated $34.8M increase.
- Simplex Trading's biggest Q4 2015 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $13.8M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q4 2015, selling an estimated $27.5M.
- Simplex Trading's ten largest holdings make up 19% of its $1.28B portfolio in Q4 2015.
- Simplex Trading opened 1,417 new positions and closed 1,598 in Q4 2015.
- Simplex Trading's portfolio value fell 6.4% quarter-over-quarter to $1.28B.
Based on Simplex Trading's 13F filing for Q4 2015, filed 20 Jan 2016.